TWI589095B - Mobile device charging system and related adaptive power converter and charging control circuit - Google Patents

Description

Mobile device charging system and related adaptive power converter and charging control circuit

The invention relates to a mobile device, and more particularly to a mobile device charging system and an associated adaptive power converter and charging control circuit.

Battery capacity is the main bottleneck affecting the length of use of the mobile device, and the length of time required to charge the mobile device is proportional to the battery capacity. Increasing the amount of current transmitted by the charging line can speed up the charging of the mobile device, but a large current can easily cause the charging line or the associated connecting terminal to overheat and cause danger. In order to avoid danger during charging, the circuit components and charging lines in the conventional charging device must be matched in advance, so the charging device can only be used with a dedicated charging cable, and therefore the user is not allowed to replace the charging cable of different specifications. Since the structure of the conventional charging device severely limits the flexibility of the replacement of the charging line, the convenience and application range of the charging device are greatly reduced.

In view of this, how to effectively balance the speed and safety of charging mobile devices is an urgent problem to be solved.

The present specification provides an embodiment of a mobile device charging system comprising: a mobile charger and a mobile device. The mobile charger includes: a power conversion circuit, The utility model is configured to convert a source voltage signal and a source current signal into a DC voltage signal and a DC current signal; a communication interface for transmitting a data signal, and capable of outputting the DC voltage signal and the DC current signal, and the power source Between the conversion circuit and the communication interface, there is a power output path; an output switch is located on the power output path; a power supply sensing circuit is configured to sense a signal on the power output path; and a power supply terminal control circuit, The power conversion circuit and the communication interface are coupled to receive the data signal, and are capable of controlling the operation of the power conversion circuit and the output switch; an output terminal; and a charging line coupled to the communication interface and the The output terminals are configured to transmit the data signal and are capable of receiving the DC voltage signal and the DC current signal to provide an output voltage signal and an output current signal to the output terminal. The mobile device includes: a device end connector detachably connected to the output terminal to receive voltage and current transmitted from the output terminal; a battery, and the device end connector and the battery have a power input path; an input switch located on the power input path; a device-side sensing circuit for sensing a signal on the power input path; and a device-side control circuit coupled to the device-side connector The input switch and the device end sensing circuit are configured to control a switching operation of the input switch, and can generate and transmit the data signal to the power supply terminal through the device end connector, the charging line, and the communication interface a control circuit, and the power supply terminal control circuit is configured to control the power conversion circuit to adjust a size of at least one of the DC current signal and the DC voltage signal according to the content of the data signal, so as to control the voltage drop of the charging line Below the predetermined threshold.

The present specification further provides an embodiment of an adaptive power converter for use in a mobile charger. The mobile charger is used for charging a mobile device, and includes an output terminal and a charging line coupled to the output terminal for transmitting a data And receiving a DC voltage signal and a DC current signal to provide an output voltage signal and an output current signal to the output terminal. The mobile device includes a device end connector and a battery, and the device end connector is detachably connected to the output terminal to receive voltage and current transmitted from the output terminal, and the device end connector and the device There is a power input path between the batteries. The adaptive power converter includes: a power conversion circuit for converting a source voltage signal and a source current signal into the DC voltage signal and the DC current signal; a communication interface for transmitting the data signal, and capable of Outputting the DC voltage signal and the DC current signal to the charging line, and having a power output path between the power conversion circuit and the communication interface; and a power supply terminal control circuit coupled to the power conversion circuit and the communication interface Receiving the data signal and capable of controlling the operation of the power conversion circuit; wherein the mobile device is capable of transmitting the signal to the power input path through the device end connector, the charging line, and The communication interface transmits the data signal to the power supply terminal control circuit, and the power supply terminal control circuit controls the power conversion circuit to adjust the size of at least one of the DC current signal and the DC voltage signal according to the content of the data signal. The voltage drop of the charging line is controlled to be below a predetermined threshold.

The present specification further provides an embodiment of a charge control circuit for use in a mobile device. The mobile device can be charged via a mobile charger. The mobile charger includes an adaptive power converter, an output terminal, and a charging line. The adaptive power converter includes a power conversion circuit and a communication interface, and the power conversion circuit is configured to combine a source voltage signal with a source The source current signal is converted into a DC voltage signal and a DC current signal, the communication interface is configured to transmit a data signal, and can output the DC voltage signal and the DC current signal, and the power conversion circuit and the communication Between the interfaces, a power output path is coupled between the adaptive power converter and the output terminal for transmitting the data signal, and is capable of receiving the DC voltage signal and the DC current signal to provide An output voltage signal and an output current signal to the output terminal. The mobile device includes a device end connector and a battery, and the device end connector is detachably connected to the output terminal to receive voltage and current transmitted from the output terminal, and the device end connector and the device There is a power input path between the batteries. The charging control circuit includes: an input switch located on the power input path; and a device end control circuit coupled to the device end connector and the input switch for controlling switching operation of the input switch, and capable of Transmitting the data signal to the adaptive power converter through the device end connector, the charging line, and the communication interface according to the sensing result of the signal on the power input path, and the adaptive power converter is based on The content of the data signal controls the power conversion circuit to adjust the magnitude of at least one of the direct current signal and the direct current voltage signal to control the voltage drop of the charging line below a predetermined threshold.

One of the advantages of the above embodiment is that the aforementioned mobile charger can supply a large output current to the mobile device, so that the speed of charging the mobile device can be effectively accelerated.

Another advantage of the above embodiment is that the adaptive power converter can adaptively adjust the generated DC voltage signal and the DC current signal according to the indication of the charging control circuit, so that it can be used to charge different types of mobile devices. , has a fairly wide range of application flexibility.

Another advantage of the above embodiment is that the adaptive power converter or the charging control circuit can dynamically estimate the voltage drop of the charging line and automatically perform an adaptive process to control the voltage drop of the charging line below a predetermined threshold. Therefore, users can be allowed to use different specifications. The charging line further improves the selection flexibility of the charging line and enhances the safety, convenience and application range of the aforementioned mobile charger.

Another advantage of the above embodiment is that the adaptive power converter or the charging control circuit can automatically determine whether an abnormal leakage current occurs in the power transmission path between the mobile charger and the mobile device, thereby effectively ensuring charging. Safety, reducing the risk of using a large current for fast charging.

Other advantages of the invention will be explained in more detail in conjunction with the following description and drawings.

100‧‧‧mobile device charging system

102‧‧‧Mobile charger

110‧‧‧Adaptive power converter

120‧‧‧output terminal

130‧‧‧Charging cable

104‧‧‧mobile device

140‧‧‧device-side connector

150‧‧‧Battery

160‧‧‧Charging control circuit

211‧‧‧Power converting circuit

213‧‧‧Communication interface

215‧‧‧output switch

217‧‧‧Power-side sensing circuit

219‧‧‧Power-side control circuit

221‧‧‧Power transmission line

223‧‧‧data transmission line

225‧‧‧parasitic resistance

261‧‧‧Input switch (input switch)

263‧‧‧device-side sensing circuit

265‧‧‧device-side control circuit

310‧‧‧First digit conversion analog circuit (first DAC)

320‧‧‧Second digital to analog circuit (second DAC)

330‧‧‧First power supply analog-to-digital (first charger-side ADC)

340‧‧‧Second power supply side analog-digit ADC

350‧‧‧Power-side digital processing circuit

360‧‧‧charger-side driver circuit

440‧‧‧Power-side multiplexer

510‧‧‧First device-side analog digital circuit (first device-side ADC)

520‧‧‧Second device-side analog-to-digital ADC

530‧‧‧device-side digital processing circuit

540‧‧‧device-side driver circuit

620‧‧‧device-side multiplexer

710‧‧‧foreign object

900‧‧‧mobile device charging system

902‧‧‧mobile charger

920‧‧‧Receiving terminal

940‧‧‧Power-side connector

CSI‧‧‧charger-side current value

CSV‧‧‧charger-side current value

D1‧‧‧first digital value

D2‧‧‧second digital value

DATA‧‧‧data signal

Dii‧‧‧Input current sensing value

Din‧‧‧device-side sensing value

Dio‧‧‧output current sensing value

Dout‧‧‧charger-side sensing value

DSI‧‧‧device-side current value

DSV‧‧‧device-side voltage value

Dvi‧‧‧Input voltage sensing value

Dvo‧‧‧output voltage sensing value

IB‧‧‧Charging current signal

Idc‧‧‧DC current signal

Ifb‧‧‧Leakage current

Iin‧‧‧ input current signal

Iout‧‧‧output current signal

Iref‧‧‧reference current signal

Is‧‧‧source current signal

ITG‧‧‧target current value

M1‧‧‧charger-side selection signal

M2‧‧‧device-side selection signal

Sii‧‧‧Input current sensing signal

Sio‧‧‧output current sensing signal

Svi‧‧‧Input voltage sensing signal

Svo‧‧‧output voltage sensing signal

SW1‧‧‧charger-side switch signal

SW2‧‧‧device-side switch signal

VB‧‧‧Charging voltage signal

Vdc‧‧‧DC voltage signal

Vin‧‧‧Input voltage signal

Vout‧‧‧output voltage signal

Vref‧‧‧reference voltage signal

Vs‧‧‧source voltage signal

VTG‧‧‧target voltage value

FIG. 1 is a simplified schematic diagram of a mobile device charging system according to an embodiment of the present invention.

FIG. 2 is a simplified functional block diagram of the mobile device charging system of FIG. 1. FIG.

3 is a simplified functional block diagram of an embodiment of the adaptive power converter of FIG. 2.

4 is a simplified functional block diagram of another embodiment of the adaptive power converter of FIG. 2.

FIG. 5 is a simplified functional block diagram of an embodiment of the charge control circuit of FIG.

6 is a simplified functional block diagram of another embodiment of the charge control circuit of FIG. 2.

FIG. 7 is a simplified functional block diagram of the presence of foreign matter in the mobile device charging system of FIG. 1. FIG.

FIG. 8 is a flow chart showing a simplified charging method of a mobile device according to an embodiment of the present invention.

FIG. 9 is a simplified schematic diagram of a mobile device charging system according to another embodiment of the present invention.

FIG. 10 is a simplified functional block diagram of the mobile device charging system of FIG. 9. FIG.

Embodiments of the present invention will be described below in conjunction with the associated drawings. In the figures, the same reference numerals are used to refer to the same or similar elements or methods.

1 is a simplified schematic diagram of a mobile device charging system 100 in accordance with a first embodiment of the present invention. As shown in FIG. 1, mobile device charging system 100 includes a mobile charger 102 and a mobile device 104, wherein mobile charger 102 can be used to charge mobile device 104.

The mobile charger 102 includes an adaptive power converter 110, an output terminal 120, and a charging line 130. The adaptive power converter 110 is configured to receive a data signal and generate a DC voltage signal and a DC current signal. The charging line 130 is coupled between the adaptive power converter 110 and the output terminal 120 for transmitting the data signal and capable of receiving the DC voltage signal and the DC current signal generated by the adaptive power converter 110 to provide an output voltage signal and an output. The current signal is to the output terminal 120.

The mobile device 104 includes a device end connector 140, a battery 150, and a charging control circuit 160. The device end connector 140 can be detachably connected to the output terminal 120 to receive the voltage and current transmitted from the output terminal 120, and has a power input path between the device end connector 140 and the battery 150. The charging control circuit 160 is coupled to the device end connector 140 and is capable of generating and transmitting data signals to the adaptive power converter 110 through the device end connector 140 and the charging line 130.

The adaptive power converter 110 of the mobile charger 102 can adjust the magnitude of the output DC voltage signal or DC current signal according to the content of the data signal transmitted from the charging control circuit 160 to control the voltage drop of the charging line 130 to a predetermined threshold. Below the value.

2 is a simplified functional block diagram of the mobile device charging system 100 of FIG. 1. As shown in FIG. 2, the adaptive power converter 110 includes a power conversion circuit 211, a communication interface 213, an output switch 215, a power supply terminal sensing circuit 217, and a power supply terminal control circuit 219. The power transmission line 221 and the data transmission line 223 are included in the charging line 130, and the reference numeral 225 represents the parasitic resistance on the power transmission line 221. The charge control circuit 160 includes an input switch 261, a device end sensing circuit 263, and a device end control circuit 265.

In the adaptive power converter 110, the power conversion circuit 211 is used to apply a source voltage The signal Vs and a source current signal Is are converted into a DC voltage signal Vdc and a DC current signal Idc. The communication interface 213 is configured to transmit a data signal DATA, and the power conversion circuit 211 and the communication interface 213 have a power output path. The communication interface 213 is capable of outputting the DC voltage signal Vdc and the DC current signal Idc to the charging line 130 such that the charging line 130 provides the output voltage signal Vout and the output current signal Iout to the output terminal 120. The output switch 215 is located on the aforementioned power output path for selectively conducting the DC voltage signal Vdc and the DC current signal Idc generated by the power conversion circuit 211 to the communication interface 213. The power supply side sensing circuit 217 is configured to sense a signal on the power output path (eg, the aforementioned signal Vdc, signal Idc) to generate a corresponding output voltage sensing signal Svo and/or an output current sensing signal Sio. The power supply terminal control circuit 219 is coupled to the power conversion circuit 211 and the communication interface 213 for receiving the data signal DATA.

In practice, the power supply terminal sensing circuit 217 can be coupled to the signal path between the power conversion circuit 211 and the output switch 215 to sense a signal on the signal path between the power conversion circuit 211 and the output switch 215. The power supply terminal sensing circuit 217 can also be coupled to the signal path between the output switch 215 and the communication interface 213 to sense a signal on the signal path between the output switch 215 and the communication interface 213.

In operation, the power supply terminal control circuit 219 can control the power conversion circuit 211 and the output switch 215 according to the content of the received data signal DATA and/or the sensing result of the power supply terminal sensing circuit 217 on the signal on the power output path. Operating to control the pressure drop of the charging line 130 below a predetermined threshold.

Depending on the source device or type of the source voltage signal Vs and the source current signal Is, the power conversion circuit 211 can be selected from various types of step-up power converters, step-down power converters, buck-boost power converters, or A flyback power converter is implemented. In other words, the source voltage signal Vs may be an AC voltage signal or a DC voltage signal, and the DC voltage signal Vdc may be higher than the source voltage signal Vs or may be lower than the source voltage signal. The size of the Vs. Similarly, the magnitude of the direct current signal Idc may be larger than the magnitude of the source current signal Is, or may be smaller than the magnitude of the source current signal Is.

As long as the mobile device 104 can withstand, the DC current signal Idc generated by the power conversion circuit 211 can be set to 5 amps, 8 amps, 10 amps, or even a larger current value to effectively increase the charging of the mobile device 104. speed.

In practice, the different functional blocks in the adaptive power converter 110 can be implemented by different circuits or integrated into a single circuit chip. In addition, some components (not shown) such as the power switch and the inductor of the output switch 215, the power supply terminal sensing circuit 217, and/or the power conversion circuit 211 may be disposed outside the adaptive power converter 110. For example, some components such as the power switch and the inductor of the output switch 215, the power supply terminal sensing circuit 217, and/or the power conversion circuit 211 may be set outside the adaptive power converter 110 (for example, with an adaptive power converter). The 110 connected circuit boards) and the other functional blocks in the adaptive power converter 110 are integrated into a single circuit wafer.

In the charging line 130, the power transmission line 221 is used to transmit the power signal that the adaptive power converter 110 is to supply to the mobile device 104, and the data transmission line 223 is used to transmit the data signal DATA. Although the parasitic resistance 225 may be present on the power transmission line 221 of the charging line 130 to cause a voltage drop, the output voltage signal Vout supplied by the charging line 130 to the output terminal 120 and the output current signal Iout are usually the same as the DC voltage signal Vdc and DC. The magnitude of the current signal Idc is proportional.

In practice, the charging line 130 can be transmitted with various specifications capable of simultaneously transmitting power and data. The line is realized. For example, in some embodiments, the charging line 130 can be implemented with a universal serial cable (USB cable). In this case, the D+ and D-data signals defined by the Universal Serial Bus series can be used to implement the aforementioned data signal DATA, and the Universal Serial Bus Power Transmission Series Specification (USB Power) can also be used. The CC1 and CC2 data signals defined by the Delivery series specifications) implement the aforementioned data signal DATA.

In the charge control circuit 160, the input switch 261 is located on the power input path between the device side connector 140 and the battery 150 for selectively inputting the input voltage signal Vin and the input current signal actually received by the device side connector 140. Iin is turned on to the input of battery 150 to form a charging voltage signal VB of battery 150 and a charging current signal IB. The device end sensing circuit 263 is configured to sense a signal on the power input path (eg, the aforementioned signals Vin, Iin, VB, and/or IB) to generate a corresponding input voltage sensing signal Svi and/or input current. Sensing signal Sii. The device end control circuit 265 is coupled to the device end connector 140, the input switch 261, and the device end sensing circuit 263. The device end control circuit 265 is configured to control the switching operation of the input switch 261 according to the sensing result of the signal on the power input path by the device end sensing circuit 263 to avoid the charging voltage signal VB and/or the charging current signal IB of the battery 150. The size exceeds the safe range. In addition, the device-side control circuit 265 can also generate and transmit the data signal DATA to the device-side connector 140, the charging line 130, and the communication interface 213 according to the sensing result of the signal on the power input path by the device-side sensing circuit 263. Power supply terminal control circuit 219.

In practice, the device-side sensing circuit 263 can be coupled to the signal path between the device-side connector 140 and the input switch 261 to sense a signal on the signal path between the device-side connector 140 and the input switch 261 ( For example, the aforementioned signal Vin, signal Iin). Loading The set-end sensing circuit 263 can also be coupled to the signal path between the input switch 261 and the battery 150 to sense a signal on the signal path between the input switch 261 and the battery 150 (eg, the aforementioned signal VB, signal IB). ).

In addition, different functional blocks in the charge control circuit 160 can be implemented by different circuits, respectively, or integrated into a single circuit chip. For example, the device side sensing circuit 263 can be reconfigured outside of the charging control circuit 160 (e.g., on a circuit board connected to the charging control circuit 160) and the other functional blocks in the charging control circuit 160 can be integrated into a single circuit chip.

For the sake of simplicity of explanation, the connection relationship between the adaptive power converter 110, the charging line 130, and other components and components in the charging control circuit 160 is not shown in FIG.

In practice, the mobile charger 102 can be used as a power adapter, a mobile power bank, a car charger, or any other that can be adjusted according to the instructions of the mobile device 104. A device that outputs DC voltage and current.

In addition, the mobile device 104 can be implemented in the form of various portable electronic devices, such as a mobile phone, a tablet computer, a notebook computer, a netbook computer, a portable video player, and the like.

The charging line 130 itself typically has a parasitic resistance, and the magnitude of the parasitic resistance is related to the length of the charging line 130. Therefore, the magnitude of the voltage and/or current actually received by the mobile device 104 may be lower than the magnitude of the DC voltage and/or DC current generated by the adaptive power converter 110. In addition, different charging lines 130 may cause different voltage drops, and the same charging line 130 may have different voltage drops in different life stages or in different operating environments.

In order to provide the user with the flexibility to replace the charging line 130 and to ensure safety during charging, the aforementioned adaptive power converter 110 or charging control circuit 160 may be based on signals on the corresponding power input path (eg, the aforementioned signals Vin, Iin, The sensing result of VB, and/or IB) dynamically estimates the voltage drop of the charging line 130, and further instructs the power conversion circuit 211 to adjust the generated DC voltage signal Vdc and the DC current signal Idc according to the result of the voltage drop estimation. Size to control the voltage drop of the charging line 130 below a predetermined threshold.

Please refer to FIG. 3 and FIG. 4 , which are simplified functional block diagrams of different embodiments of the adaptive power converter 110 of FIG. 2 .

In the embodiment of FIG. 3, the power supply terminal control circuit 219 of the adaptive power converter 110 includes a first digital to analog circuit 310, a second digital analog circuit 320, a first power supply analog digital circuit 330, and a second power supply. The analog-to-digital conversion circuit 340 and the power supply terminal digital processing circuit 350.

The first digital to analog circuit 310 is coupled to the power conversion circuit 211 for generating the reference current signal Iref according to the first digital value D1, and controlling the power conversion circuit 211 to adjust the magnitude of the direct current signal Idc by using the reference current signal Iref. The second digital to analog circuit 320 is coupled to the power conversion circuit 211 for generating the reference voltage signal Vref according to the second digital value D2, and controlling the power conversion circuit 211 to adjust the magnitude of the DC voltage signal Vdc by using the reference voltage signal Vref. The first power supply analog-to-digital circuit 330 is coupled between the power supply terminal sensing circuit 217 and the power supply terminal digital processing circuit 350 for converting the output voltage sensing signal Svo into the output voltage sensing value Dvo. The second power supply terminal analog-to-digital circuit 340 is coupled between the power supply terminal sensing circuit 217 and the power supply terminal digital processing circuit 350 for converting the output current sensing signal Sio into the output current sensing value Dio. The power supply terminal digital processing circuit 350 is coupled to the communication interface 213 and the first digit The analog analog circuit 310 and the second digital analog circuit 320 can calculate the power supply terminal voltage value CSV according to the output voltage sensing value Dvo, and calculate the power supply terminal current value CSI according to the output current sensing value Dio.

The power supply terminal control circuit 219 in the embodiment of FIG. 4 includes the aforementioned first digital-to-digital analog circuit 310, second digital-to-digital analog circuit 320, first power supply analog-to-digital circuit 330, and power supply multiplexer 440, but The manner in which the first power supply terminal of the analogy terminal 4 is connected to the analog digital circuit 330 is different from the embodiment of FIG. 3 described above.

In the embodiment of FIG. 4, the power supply terminal multiplexer 440 is coupled to the power supply terminal sensing circuit 217, and can selectively output the output voltage sensing signal Svo or the output current sensing according to the control of the power supply terminal selection signal M1. Signal Sio. The first power supply end analog-to-digital circuit 330 is coupled between the power supply terminal multiplexer 440 and the power supply terminal digital processing circuit 350 for converting the output signal of the power supply terminal multiplexer 440 into a corresponding power supply terminal sensing value. Dout. The power supply terminal digital processing circuit 350 can generate the power supply terminal selection signal M1 to switch the output signal of the power supply terminal multiplexer 440, and can calculate the power supply terminal voltage value CSV or the power supply terminal current value CSI according to the power supply terminal sensing value Dout.

For example, when the power supply terminal multiplexer 440 outputs the output voltage sensing signal Svo to the first power supply terminal analog-to-digital circuit 330, the power supply terminal digital processing circuit 350 can generate the power supply terminal according to the first power supply terminal analog-to-digital circuit 330. The sensed value Dout is used to calculate the voltage value CSV of the power supply terminal. When the power supply terminal multiplexer 440 outputs the output current sensing signal Sio to the first power supply terminal analog-to-digital circuit 330, the power supply terminal digital processing circuit 350 can sense the power supply terminal generated by the first power supply terminal analog-to-digital circuit 330. The value Dout is used to calculate the current value CSI of the power supply terminal.

In the adaptive power converter 110, the power conversion circuit 211 can control the generated DC according to the reference current signal Iref by using various existing current loop control mechanisms. The magnitude of the current signal Idc. Similarly, the power conversion circuit 211 can control the magnitude of the generated DC voltage signal Vdc according to the reference voltage signal Vref using various existing voltage loop control mechanisms. In practice, the power conversion circuit 211 can only activate one of the aforementioned current loop control mechanism and voltage loop control mechanism at the same time, and close another loop control mechanism to simplify the complexity of the circuit control.

The power terminal digital processing circuit 350 can adjust the first digit value D1 or the second digit value D2 according to the content of the data signal DATA, the power supply terminal voltage value CSV, and/or the power supply terminal current value CSI transmitted from the communication interface 213, and The power supply side switching signal SW1 is generated to control the switching operation of the output switch 215.

The power supply terminal digital processing circuit 350 can also adjust the value of the first digital value D1 or the second digital value D2 according to the content of the data signal DATA, the power supply terminal voltage value CSV, and/or the power supply terminal current value CSI, thereby adjusting the reference voltage. The magnitude of the signal Vref or the reference current signal Iref is such that closed loop control is implemented inside the power supply terminal control circuit 219. In this way, the accuracy of the DC current signal Idc and the DC voltage signal Vdc outputted by the power conversion circuit 211 can be further improved.

In some embodiments, the power supply terminal digital processing circuit 350 is also capable of transmitting the power supply terminal voltage value CSV or the power supply terminal current value CSI to the device side control circuit 265 in the mobile device 104 using the data signal DATA.

In practice, a power supply terminal driving circuit 360 may be disposed between the power supply terminal digital processing circuit 350 and the output switch 215 to drive the aforementioned power supply terminal switching signal SW1.

Please refer to FIG. 5 and FIG. 6 , which are simplified functional block diagrams of different embodiments of the charging control circuit 160 of FIG. 2 .

In the embodiment of FIG. 5, the device-side control circuit 265 of the charging control circuit 160 includes a first device-side analog-to-digital circuit 510, a second device-side analog-to-digital circuit 520, And a device end digital processing circuit 530. The first device-side analog-to-digital circuit 510 is coupled to the device-side sensing circuit 263 for converting the input voltage sensing signal Svi into a corresponding input voltage sensing value Dvi. The second device-side analog-to-digital circuit 520 is coupled to the device-side sensing circuit 263 for converting the input current sensing signal Sii into a corresponding input current sensing value Dii. The device-side digital processing circuit 530 is coupled to the device-side connector 140, the input switch 261, the first device-side analog-to-digital circuit 510, and the second device-side analog-to-digital circuit 520, and can be calculated according to the input voltage sensing value Dvi. The device terminal voltage value DSV, and the device terminal current value DSI is calculated according to the input current sensing value Dii.

The device-side control circuit 265 in the embodiment of FIG. 6 includes the aforementioned first device-side analog-to-digital circuit 510, device-side digital processing circuit 530, and device-side multiplexer 620, but the first device-end analogy in FIG. The manner in which the digital circuit 510 is connected is different from the embodiment of FIG. 5 described above.

In the embodiment of FIG. 6, the device-side multiplexer 620 is coupled to the device-side sensing circuit 263, and can selectively output the input voltage sensing signal Svi or the input current sensing according to the control of the device-side selection signal M2. Signal Sii. The first device-side analog-to-digital circuit 510 is coupled to the output of the device-side multiplexer 620 for converting the output signal of the device-side multiplexer 620 into a corresponding device-side sensed value Din. The device-end digital processing circuit 530 can generate the device-side selection signal M2 to switch the output signal of the device-side multiplexer 620, and can calculate the device-side voltage value DSV or the device-side current value DSI according to the device-side sensing value Din.

For example, when the device-side multiplexer 620 outputs the input voltage sensing signal Svi to the first device-side analog-to-digital circuit 510, the device-side digital processing circuit 530 of the device-side control circuit 265 can convert the digital bit according to the first device end. Device 510 produces a sense of device The measured value Din is used to calculate the device terminal voltage value DSV. When the device-side multiplexer 620 outputs the input current sensing signal Sii to the first device-side analog-to-digital circuit 510, the device-side digital processing circuit 530 can sense the device-side sensing generated by the first device-side analog-to-digital circuit 510. The value Din is used to calculate the device terminal current value DSI.

In the charging control circuit 160, the device-end digital processing circuit 530 is configured to generate the device-side switching signal SW2 according to the device-end voltage value DSV or the device-side current value DSI to control the switching operation of the input switch 261, thereby controlling the charging of the battery 150. The magnitude of the voltage signal VB and the charging current signal IB.

For example, when the device end digital processing circuit 530 determines that the charging voltage signal VB/or the charging current signal IB exceeds (or falls below) an acceptable range according to the device terminal voltage value DSV or the device terminal current value DSI, the device end digital processing circuit 530 The device side switch signal SW2 can be utilized to turn off the input switch 261. When the battery 150 has been fully charged or the charge reaches a predetermined level, the device end digital processing circuit 530 can also utilize the device side switch signal SW2 to turn off the input switch 261, thereby preventing the battery 150 from being overcharged.

In some embodiments, the device end digital processing circuit 530 can also perform correlation determination according to the device terminal voltage value DSV or the device terminal current value DSI to generate the data signal DATA, or use the data signal DATA to transmit the device terminal voltage value DSV or device. The terminal current value DSI is to the power supply terminal control circuit 219 in the adaptive power converter 110.

In operation, the device side control circuit 265 can also turn off the input switch 261 to protect the battery 150 and related circuits when the device terminal voltage value DSV exceeds the threshold voltage value or when the device terminal current value DSI exceeds the critical current value. .

In practice, a device end driving circuit 540 may be disposed between the device end digital processing circuit 530 and the input switch 261 to drive the aforementioned device end switching signal SW2.

The actual operating environment of the mobile device charging system 100 depends mainly on the needs and habits of the user, and thus it is possible that foreign objects enter the interface of the device-side connector 140 of the mobile device 104 due to the influence of the operating environment. For example, when a user places the mobile device charging system 100 in a clothing pocket, a backpack, a handbag, or a tote bag, various foreign objects such as batt, hair, textile fibers, or other fine objects in the interior or surrounding environment of the container are used. It is possible to enter the interface of the device-side connector 140 of the mobile device 104 and contact the conductive pins of the device-side connector 140.

When the aforementioned foreign matter is electrically conductive, it is possible to form an abnormal current path at the interface of the device-side connector 140, resulting in a leakage current.

For example, FIG. 7 is a simplified functional block diagram showing the presence of foreign matter in the mobile device charging system 100 described above. As shown in FIG. 7, the foreign object 710 that is in contact with the conductive pin of the device end connector 140 for some reason may form an abnormal current path at the interface of the device end connector 140, resulting in the device end connector. A leakage current Ifb occurs at 140. When the leakage current Ifb is too large, it may cause overheating of the device-side connector 140, the connected output terminal 120, or an adjacent component or other item, posing a safety concern.

In order to improve the safety during charging, the aforementioned adaptive power converter 110 or charging control circuit 160 may sense according to signals on the corresponding power input path (for example, the aforementioned signals Vin, Iin, VB, and/or IB). As a result, it is dynamically judged whether or not an abnormal leakage current occurs on the power transmission path between the mobile charger 102 and the mobile device 104 (for example, at the device side connector 140) to effectively ensure the safety at the time of charging.

The operation of the foregoing mobile device charging system 100 will be further described below with reference to FIG. formula. FIG. 8 is a flow chart showing a simplified charging method of a mobile device according to an embodiment of the present invention.

After the output terminal 120 of the mobile charger 102 is coupled to the device-side connector 140 of the mobile device 104, the charging control circuit 160 and the adaptive power converter 110 can communicate with each other through the charging line 130 for one-way or two-way. communication.

When the charge control circuit 160 requires the adaptive power converter 110 to provide the power required by the mobile device 104 for charging, the device side control circuit 265 can perform the flow 810 of FIG.

In flow 810, the device side control circuit 265 can utilize the data signal DATA to transmit an associated indication to the power supply terminal control circuit 219 in the adaptive power converter 110. For example, the device-side digital processing circuit 530 of the device-side control circuit 265 can transmit a target voltage value VTG and/or a target current value ITG to the power-side digital processing circuit of the power supply terminal control circuit 219 by using the data signal DATA. 350.

Next, the power supply terminal control circuit 219 performs a flow 820.

In the process 820, the power supply terminal control circuit 219 can control the power conversion circuit 211 to generate a corresponding DC voltage signal Vdc and a DC current signal Idc. For example, the power supply terminal digital processing circuit 350 of the power supply terminal control circuit 219 can adjust the first digital value D1 and the second digital value D2 according to the content of the data signal DATA to control the power conversion circuit 211 to adjust the DC by using the reference current signal Iref. The magnitude of the current signal Idc, and the reference voltage signal Vref is used to control the power conversion circuit 211 to adjust the magnitude of the DC voltage signal Vdc.

In the process 830, the charging line 130 receives the DC voltage signal Vdc and the DC current signal Idc generated by the power conversion circuit 211 through the communication interface 213 to provide an output voltage signal Vout and an output current signal Iout to the output terminal 120.

In flow 840, the device end connector 140 receives the electricity transmitted by the output terminal 120. The voltage and current are pressed to form an input voltage signal Vin and an input current signal Iin actually received by the mobile device 104.

In flow 850, device-side sensing circuit 263 can sense signals on the power input path (eg, the aforementioned signals Vin, Iin, VB, and/or IB) to produce corresponding sensing results (eg, the foregoing The voltage sensing signal Svi and/or the input current sensing signal Sii) are input. In addition, the device end control circuit 265 can calculate the corresponding device terminal voltage value DSV and/or the device terminal current value DSI according to the sensing result of the device end sensing circuit 263.

Alternatively, the other device (not shown) in the mobile device 104 may calculate the corresponding device terminal voltage value DSV and/or the device terminal current value DSI according to the sensing result of the device terminal sensing circuit 263, and then The device side digital processing circuit 530 then reads the device terminal voltage value DSV and/or the device terminal current value DSI from the arithmetic circuit.

In flow 860, the power supply terminal control circuit 219 or the device side control circuit 265 can dynamically estimate the voltage drop of the charging line 130 based on the device terminal voltage value DSV.

For example, in an embodiment, the device-side digital processing circuit 530 of the device-side control circuit 265 can notify the power-side control circuit 219 of the device-side voltage value DSV of the signal on the corresponding power input path through the data signal DATA in the flow 860. At this time, the power supply terminal control circuit 219 can calculate the corresponding power supply terminal voltage value CSV according to the sensing result of the power supply terminal sensing circuit 217 (for example, the foregoing output voltage sensing signal Svo), and calculate the power supply terminal voltage value CSV and The difference between the device terminal voltage values DSV to produce a voltage drop estimate for the charging line 130.

For another example, in another embodiment, the power supply terminal control circuit 219 can calculate a corresponding power supply terminal voltage value CSV according to the sensing result of the power supply terminal sensing circuit 217 in the flow 860, and send the power supply terminal voltage through the data signal DATA. The value CSV notifies the device side digital processing circuit 530 of the device side control circuit 265. At this time, the device side digital processing The path 530 can calculate a difference between the supply terminal voltage value CSV and the device terminal voltage value DSV to generate a voltage drop estimate for the charging line 130.

For another example, in another embodiment, the device-side digital processing circuit 530 of the device-side control circuit 265 can calculate a difference between the aforementioned target voltage value VTG and the device-end voltage value DSV in the flow 860 to generate a charging line. The pressure drop estimate of 130.

In flow 870, adaptive power converter 110 can control power conversion circuit 211 to adjust DC current signal Idc/DC voltage signal Vdc to control the voltage drop of charging line 130 below a predetermined threshold.

For example, in some embodiments in which the voltage drop estimation value of the charging line 130 is generated by the power supply terminal control circuit 219, the power supply terminal control circuit 219 can control the power conversion circuit 211 to adjust the DC voltage according to the voltage drop estimation value in the flow 870. The magnitude of at least one of the current signal Idc and the DC voltage signal Vdc is such that the voltage drop of the charging line 130 is maintained below a predetermined threshold.

For another example, in some embodiments in which the device-side control circuit 265 generates a voltage drop estimate for the charging line 130, the device-end digital processing circuit 530 of the device-side control circuit 265 can estimate the voltage drop in the flow 870. The value produces a corresponding adjustment indication and transmits an adjustment indication to the power supply terminal control circuit 219 via the data signal DATA. Next, the power supply terminal control circuit 219 can control the power conversion circuit 211 to adjust the magnitude of at least one of the direct current signal Idc and the direct current voltage signal Vdc according to the received adjustment instruction to maintain the voltage drop of the charging line 130 below a predetermined threshold. .

In the process 880, the power supply terminal control circuit 219 or the device terminal control circuit 265 can detect and determine whether an abnormal leakage current occurs on the power transmission path between the mobile charger 102 and the mobile device 104 according to the device terminal current value DSI. For example, is there any leakage current Ifb that is abnormal due to the presence of the foreign matter 710 at the device end connector 140?

For example, in an embodiment, the device-side digital processing circuit 530 of the device-side control circuit 265 can notify the power-side control circuit 219 of the device-side current value DSI of the signal on the corresponding power input path in the flow 880 through the data signal DATA. . At this time, the power supply terminal control circuit 219 can calculate the corresponding power supply terminal current value CSI according to the sensing result of the power supply terminal sensing circuit 217 (for example, the foregoing output current sensing signal Sio), and utilize the power supply terminal digital processing circuit 350. Compare the power supply terminal current value CSI with the device terminal current value DSI. If the power supply terminal current value CSI is greater than the device terminal current value DSI by more than a predetermined value, the power supply terminal digital processing circuit 350 can infer the current power transmission path between the mobile charger 102 and the mobile device 104 (eg, device connection) Abnormal leakage current occurs at the device 140).

For another example, in another embodiment, the power supply terminal control circuit 219 can calculate a corresponding power supply terminal current value CSI according to the sensing result of the power supply terminal sensing circuit 217 in the flow 880, and send the power supply terminal current through the data signal DATA. The value CSI notifies the device side control circuit 265. At this time, the device side digital processing circuit 530 of the device side control circuit 265 can compare the power supply terminal current value CSI with the device terminal current value DSI. If the power supply terminal current value CSI is greater than the device terminal current value DSI by more than a predetermined value, the device end digital processing circuit 530 can infer the current power transmission path between the mobile charger 102 and the mobile device 104 (eg, device connection) Abnormal leakage current occurs at the device 140).

For another example, in another embodiment, the device-side digital processing circuit 530 of the device-side control circuit 265 can compare the aforementioned target current value ITG with the device-side current value DSI in the flow 880. If the target current value ITG is greater than the device-side current value DSI by more than a predetermined value, the device-end digital processing circuit 530 can infer the power transmission path between the mobile charger 102 and the mobile device 104 (eg, the device-side connector) At 140), an abnormal leakage current occurred.

When the mobile device charging system 100 concludes in the foregoing flow 880 that an abnormal leakage current occurs on the power transmission path between the mobile charger 102 and the mobile device 104 at this time, the flow 890 may be performed; otherwise, it may be returned. The foregoing process 850 continues to monitor signals on the power input path.

In the process 890, in order to avoid the danger caused by the aforementioned leakage current, the adaptive power converter 110 may turn off the output switch 215 or control the power conversion circuit 211 to decrease the DC current signal Idc/DC voltage signal Vdc to reduce the output voltage signal. Vout/output current signal Iout, thereby reducing or eliminating leakage current.

For example, in some embodiments in which the power supply terminal control circuit 219 determines whether a leakage current occurs, the power supply terminal digital processing circuit 350 may adjust the power supply terminal switching signal SW1 to turn off the output switch 215 or control the power conversion in the flow 890. The circuit 211 reduces the magnitude of at least one of the direct current signal Idc and the direct voltage signal Vdc to reduce the magnitude of at least one of the output voltage signal Vout and the output current signal Iout.

For example, in some embodiments in which the device-side control circuit 265 determines whether a leakage current is present, the device-side digital processing circuit 530 can generate a down-regulation indication in the flow 890 and transmit the down-regulation indication to the data signal DATA. Power supply terminal control circuit 219. The power supply terminal digital processing circuit 350 can adjust the power supply terminal switching signal SW1 to turn off the output switch 215 according to the down regulation indication sent from the device side control circuit 265, or control the power conversion circuit 211 to adjust the DC current signal Idc and the DC voltage signal Vdc. At least one of the sizes to reduce the magnitude of at least one of the output voltage signal Vout and the output current signal Iout.

Please refer to FIG. 9 and FIG. FIG. 9 is a simplified schematic diagram of a mobile device charging system 900 according to another embodiment of the present invention. FIG. 10 is a simplified functional block diagram of the mobile device charging system 900 of FIG.

Mobile device charging system 900 is similar to mobile device charging system 100 described above, but mobile charger 902 in mobile device charging system 900 also includes additional receiving terminals 920 and power terminal connectors 940.

As shown in FIG. 10, the power supply terminal connector 940 is coupled to the communication interface 213 of the adaptive power converter 110, and is detachably connectable to the receiving terminal 920. The charging line 130 of the mobile charger 902 is coupled between the receiving terminal 920 and the output terminal 120, and receives the DC generated by the power conversion circuit 211 through the receiving terminal 920, the power supply terminal connector 940, and the communication interface 213. Voltage signal Vdc and DC current signal Idc.

In other words, in the mobile device charging system 900, the charging line 130 is not directly connected to the adaptive power converter 110, but is indirectly connected to the adaptive power converter 110 through the receiving terminal 920 and the power terminal connector 940. Thus, both the charging line 130 and the adaptive power converter 110 can be separated, rather than being fixedly coupled together.

The foregoing description of the connection relationship, the embodiment, the operation mode, and the related advantages of the other elements in the embodiments of FIGS. 1 to 8 also apply to the embodiments of FIGS. 9 and 10. For the sake of brevity, the description will not be repeated here.

As with the mobile device charging system 100 described above, the power supply terminal control circuit 219 or the device terminal control circuit 265 in the mobile device charging system 900 can dynamically estimate the voltage drop of the charging line 130 and further indicate the adaptability according to the estimation result. The power converter 110 adjusts the magnitude of the generated direct current and/or direct current voltage to control the voltage drop of the charging line 130 below a predetermined threshold. Therefore, even if the original charging line 130 is replaced with another specification charging line for use with the adaptive power converter 110, it is ensured that the voltage and current supplied by the mobile charger 902 to the mobile device 104 can be kept in a safe range. There is no abnormality in the charging line overheating due to the replacement of the charging cable.

In this way, the user can use other specifications of the charging line to use with the adaptive power converter 110 as needed. For example, the user can replace the original charging line 130 with a longer length charging line, a charging line capable of carrying more current, or other material with a more reliable charging line.

Obviously, the architecture of the aforementioned mobile device charging system 900 can give the user the flexibility to replace the charging line 130, thereby greatly improving the convenience and application range of the adaptive power converter 110.

In addition, similar to the mobile device charging system 100 described above, the power supply terminal control circuit 219 or the device terminal control circuit 265 in the mobile device charging system 900 can dynamically determine the power transmission path between the mobile charger 102 and the mobile device 104. Is there an abnormal leakage current? Therefore, when a foreign matter is present at the device end connector 140 or the power supply terminal connector 940 to induce a leakage current, the mobile device charging system 900 can perform the foregoing process 890, and the output switch 215 can be turned off by the adaptive power converter 110. Or controlling the power conversion circuit 211 to decrease the DC current signal Idc/DC voltage signal Vdc to reduce the output voltage signal Vout/output current signal Iout, thereby reducing or eliminating leakage current.

As can be seen from the foregoing description, the mobile chargers 102 and 902 can supply a large output current signal Iout to the mobile device 104, so that the speed at which the mobile device 104 is charged can be effectively accelerated.

In addition, since the adaptive power converter 110 can adaptively adjust the generated DC voltage signal Vdc and the DC current signal Idc according to the indication of the charging control circuit 160, it can be used to charge different types of mobile devices. Wide application flexibility.

Furthermore, since the aforementioned adaptive power converter 110 or charging control circuit 160 is movable The voltage drop of the charging line 130 is estimated and automatically adaptively controlled to control the voltage drop of the charging line 130 below a predetermined threshold, thereby allowing the user to use charging lines of different specifications, thereby improving the flexibility of the charging line. And improving the safety, convenience, and application range of the aforementioned mobile chargers 102 and 902.

In addition, the adaptive power converter 110 or the charging control circuit 160 can also automatically determine whether an abnormal leakage current occurs on the power transmission path between the mobile charger 102 and the mobile device 104, and accordingly, accordingly, It can effectively ensure the safety during charging and reduce the danger of fast charging with high current.

It should be noted that the sequence of execution of the foregoing process in FIG. 8 is merely an exemplary embodiment, and is not intended to limit the actual implementation of the present invention. For example, the processes 880 and 890 can also be adjusted prior to the process 860. In some embodiments, flows 880 and 890 may be omitted but processes 860 and 870 are retained. In some embodiments, flows 860 and 870 may be omitted but flows 880 and 890 are retained.

Additionally, the aforementioned output switch 215, power supply sense circuit 217, power supply drive circuit 360, and/or device side drive circuit 540 may be omitted in some embodiments to simplify associated circuit complexity. In the embodiment in which the power supply terminal sensing circuit 217 is omitted, the first power supply terminal analog-to-digital circuit 330, the second power supply terminal analog-to-digital circuit 340, and the power supply terminal multiplexer in the foregoing FIGS. 3 and 4 may also be used. 440 is omitted and further simplified circuit complexity.

Certain terms are used throughout the description and claims to refer to particular elements, and those skilled in the art may refer to the same elements. This specification and the scope of the patent application do not use the difference in the name as the means for distinguishing the elements, but the difference in function of the elements as the basis for the distinction. The term "including" as mentioned in the specification and the scope of the patent application is an open term and should be interpreted as "Include but not limited to". In addition, the term "coupled" is used herein to include any direct and indirect means of attachment. Therefore, if the first element is described as being coupled to the second element, the first element may be directly connected to the second element by electrical connection or by wireless transmission, optical transmission, or the like, or by other elements or connections. The means is indirectly electrically or signally connected to the second component.

The description of "and/or" as used herein includes any combination of one or more of the listed items. In addition, the terms of any singular are intended to include the meaning of the plural, unless otherwise specified in the specification.

The "voltage signal" in the specification and the scope of the patent application can be implemented in the form of voltage or current. The "current signal" in the specification and the scope of the patent application can also be implemented in the form of voltage or current.

The above are only the preferred embodiments of the present invention, and equivalent changes and modifications made to the claims of the present invention are intended to be within the scope of the present invention.

100‧‧‧Mobile device charging system

102‧‧‧Mobile Charger

110‧‧‧Adaptive power converter

120‧‧‧Output terminal

130‧‧‧Charging line

104‧‧‧Mobile devices

140‧‧‧Device connector

150‧‧‧Battery

160‧‧‧Charging control circuit

211‧‧‧Power conversion circuit

213‧‧‧Communication interface

215‧‧‧Output switch

217‧‧‧Power supply sensing circuit

219‧‧‧Power supply terminal control circuit

221‧‧‧Power transmission line

223‧‧‧data transmission line

225‧‧‧Parasitic resistance

261‧‧‧Input switch

263‧‧‧Device-side sensing circuit

265‧‧‧Device-side control circuit

Claims (50)

A mobile device charging system (100; 900), comprising: a mobile charger (102; 902), the mobile charger (102; 902) comprising: a power conversion circuit (211) for transmitting a source voltage signal ( Vs) and a source current signal (Is) are converted into a DC voltage signal (Vdc) and a DC current signal (Idc); a communication interface (213) for transmitting a data signal (DATA) and capable of outputting the DC voltage a signal (Vdc) and the DC current signal (Idc), and a power output path between the power conversion circuit (211) and the communication interface (213); an output switch (215) located on the power output path; a power supply end sensing circuit (217) for sensing a signal (Vdc; Idc) on the power output path; a power supply end control circuit (219) coupled to the power conversion circuit (211) and the communication interface (213) for receiving the data signal (DATA), and capable of controlling the operation of the power conversion circuit (211) and the output switch (215); an output terminal (120); and a charging line (130) coupled Connected between the communication interface (213) and the output terminal (120) for transmitting the data signal (DATA), The DC voltage signal (Vdc) and the DC current signal (Idc) can be received to provide an output voltage signal (Vout) and an output current signal (Iout) to the output terminal (120); and a mobile device (104) The mobile device (104) includes: a device end connector (140) capable of removably connecting the output terminal (120) for receiving a voltage and current transmitted from the output terminal (120); a battery (150), and having a power input path between the device end connector (140) and the battery (150); An input switch (261) located on the power input path; a device-side sensing circuit (263) for sensing a signal (Vin; Iin; VB; IB) on the power input path; and a device-side control circuit (265) coupled to the device end connector (140), the input switch (261), and the device end sensing circuit (263) for controlling switching operation of the input switch (261) and capable of generating And transmitting the data signal (DATA) to the power supply terminal control circuit (219) through the device end connector (140), the charging line (130), and the communication interface (213), and the power supply terminal control circuit (219) Controlling the power conversion circuit (211) to adjust the size of at least one of the DC current signal (Idc) and the DC voltage signal (Vdc) according to the content of the data signal (DATA) to charge the charging line (130) The pressure drop is controlled below a predetermined threshold. The mobile device charging system (100; 900) of claim 1, wherein the device-side control circuit (265) is capable of transmitting a signal (Vin; Iin; VB; IB) corresponding to a signal on the power input path. a voltage value (DSV), the power supply terminal control circuit (219) is notified through the data signal (DATA), and the power supply terminal control circuit (219) can calculate a sensing result according to the power supply terminal sensing circuit (217). Corresponding power supply terminal voltage value (CSV), and calculating a difference between the power supply terminal voltage value (CSV) and the device terminal voltage value (DSV) to generate a voltage drop estimation value of the charging line (130) The power supply terminal control circuit (219) can control the power conversion circuit (211) to adjust the DC current signal (Idc) and the DC voltage signal according to the voltage drop estimation value. At least one of (Vdc) is sized to maintain a voltage drop across the charging line (130) less than the predetermined threshold. The mobile device charging system (100; 900) of claim 2, wherein the device-side control circuit (265) is capable of transmitting a signal on the power input path according to the device-side sensing circuit (263) (Vin; Iin) The sensing result of VB; IB) calculates the device terminal voltage value (DSV) or reads the device terminal voltage value (DSV) from other circuits. The mobile device charging system (100; 900) of claim 1, wherein the power supply terminal control circuit (219) is capable of calculating a corresponding power supply terminal voltage according to the sensing result of the power supply terminal sensing circuit (217). a value (CSV), and the power supply terminal voltage value (CSV) is notified to the device side control circuit (265) through the data signal (DATA), and the device side control circuit (265) can calculate the voltage value of the power supply terminal (CSV) a difference between a device terminal voltage value (DSV) corresponding to a signal (Vin; Iin; VB; IB) on the power input path to generate a voltage drop estimate of the charging line (130); The device end control circuit (265) can generate a corresponding adjustment indication according to the voltage drop estimation value, and transmit the adjustment indication to the power supply terminal control circuit (219) through the data signal (DATA), and the power supply The end control circuit (219) is capable of controlling the power conversion circuit (211) to adjust a size of at least one of the DC current signal (Idc) and the DC voltage signal (Vdc) according to the adjustment indication to the charging line (130) The pressure drop is maintained below the predetermined threshold. The mobile device charging system (100; 900) of claim 4, wherein the device-side control circuit (265) is capable of inputting a signal on the power input path according to the device-side sensing circuit (263) (Vin; Iin) The sensing result of VB; IB) calculates the device terminal voltage value (DSV) or reads the device terminal voltage value (DSV) from other circuits. The mobile device charging system (100; 900) according to claim 1, wherein the device end The control circuit (265) is capable of calculating a difference between a target voltage value (VTG) and a device terminal voltage value (DSV) corresponding to the signal (Vin; Iin; VB; IB) on the power input path to generate the a voltage drop estimation value of the charging line (130); wherein the device end control circuit (265) is capable of generating a corresponding adjustment indication according to the voltage drop estimation value, and transmitting the adjustment indication through the data signal (DATA) To the power supply terminal control circuit (219), and the power supply terminal control circuit (219) is capable of controlling the power conversion circuit (211) to adjust the DC current signal (Idc) and the DC voltage signal (Vdc) according to the adjustment indication. At least one size is maintained to maintain the pressure drop of the charging line (130) below the predetermined threshold. The mobile device charging system (100; 900) of claim 6, wherein the device-side control circuit (265) is capable of inputting a signal on the power input path according to the device-side sensing circuit (263) (Vin; Iin) The sensing result of VB; IB) calculates the device terminal voltage value (DSV) or reads the device terminal voltage value (DSV) from other circuits. The mobile device charging system (100; 900) of claim 1, wherein the device-side control circuit (265) is capable of transmitting a signal (Vin; Iin; VB; IB) corresponding to a signal on the power input path. a current value (DSI), the power supply terminal control circuit (219) is notified through the data signal (DATA), and the power supply terminal control circuit (219) is capable of calculating a sensing result according to the sensing end of the power supply terminal sensing circuit (217). Corresponding power supply current value (CSI), and comparing the power supply terminal current value (CSI) with the device terminal current value (DSI); wherein, if the power supply terminal current value (CSI) is greater than the device terminal current value (DSI) When the predetermined value is exceeded, the power supply terminal control circuit (219) can turn off the output switch (215), or control the power conversion circuit (211) to decrease the DC current signal (Idc) and the DC voltage signal (Vdc). At least one of the size to reduce the size of at least one of the output voltage signal (Vout) and the output current signal (Iout) small. The mobile device charging system (100; 900) of claim 8, wherein the device-side control circuit (265) is capable of inputting a signal on the power input path according to the device-side sensing circuit (263) (Vin; Iin) The sensing result of VB; IB) calculates the device current value (DSI) or reads the device terminal current value (DSI) from other circuits. The mobile device charging system (100; 900) of claim 1, wherein the power supply terminal control circuit (219) is capable of calculating a corresponding power supply terminal current according to the sensing result of the power supply terminal sensing circuit (217). a value (CSI), and the power supply terminal current value (CSI) is notified to the device end control circuit (265) through the data signal (DATA), and the device end control circuit (265) can compare the current value of the power supply terminal (CSI) a device-side current value (DSI) corresponding to a signal (Vin; Iin; VB; IB) on the power input path; wherein, if the supply terminal current value (CSI) is greater than the device-side current value (DSI) a predetermined value, the device end control circuit (265) is capable of generating a down regulation indication, and transmitting the down regulation indication to the power supply terminal control circuit (219) through the data signal (DATA), and the power supply terminal control circuit ( 219) being capable of turning off the output switch (215) according to the down regulation indication, or controlling the power conversion circuit (211) to decrease a magnitude of at least one of the direct current signal (Idc) and the direct current voltage signal (Vdc), To reduce at least one of the output voltage signal (Vout) and the output current signal (Iout) the size of. The mobile device charging system (100; 900) of claim 10, wherein the device-side control circuit (265) is capable of inputting a signal on the power input path according to the device-side sensing circuit (263) (Vin; Iin) The sensing result of VB; IB) calculates the device current value (DSI) or reads the device terminal current value (DSI) from other circuits. The mobile device charging system (100; 900) according to claim 1, wherein the device end The control circuit (265) is capable of comparing a target current value (ITG) with a device-side current value (DSI) corresponding to the signal (Vin; Iin; VB; IB) on the power input path; wherein, if the target current value ( If the device current value (DSI) is greater than a predetermined value, the device end control circuit (265) can generate a down regulation indication, and transmit the down regulation indication to the power supply terminal control through the data signal (DATA) a circuit (219), and the power supply terminal control circuit (219) can turn off the output switch (215) according to the down regulation indication, or control the power conversion circuit (211) to decrease the DC current signal (Idc) and the DC At least one of the voltage signals (Vdc) is sized to reduce the magnitude of at least one of the output voltage signal (Vout) and the output current signal (Iout). The mobile device charging system (100; 900) of claim 12, wherein the device-side control circuit (265) is capable of inputting a signal on the power input path according to the device-side sensing circuit (263) (Vin; Iin) The sensing result of VB; IB) calculates the device current value (DSI) or reads the device terminal current value (DSI) from other circuits. The mobile device charging system (100; 900) of claim 1, wherein the power supply terminal control circuit (219) is capable of generating a reference voltage signal (Vref) and a reference current according to the content of the data signal (DATA). a signal (Iref), and the reference voltage signal (Vref) and the reference current signal (Iref) are respectively used to control the power conversion circuit (211) to adjust the DC voltage signal (Vdc) and the DC current signal (Idc). . The mobile device charging system (100; 900) of claim 1, wherein the device-side control circuit (265) is capable of a device end corresponding to a signal (Vin; Iin; VB; IB) on the power input path When the voltage value (DSV) exceeds a threshold voltage value, or when a device-side current value (DSI) corresponding to a signal (Vin; Iin; VB; IB) corresponding to the power input path exceeds a critical current value, the signal is turned off. The input switch (261). The mobile device charging system (900) of any one of claims 1 to 15, wherein the mobile charger (902) further comprises: a receiving terminal (920); and a power supply terminal connector (940), The receiving terminal (920) is detachably connected to the communication interface (213); wherein the charging line (130) is coupled to the receiving terminal (920) and the output terminal (120) The DC voltage signal (Vdc) and the DC current signal (Idc) are received through the receiving terminal (920), the power terminal connector (940), and the communication interface (213). An adaptive power converter (110) for use in a mobile charger (102; 902), wherein the mobile charger (102; 902) is for charging a mobile device (104) and includes an output a terminal (120) and a charging line (130) coupled to the output terminal (120) for transmitting a data signal (DATA) and capable of receiving a DC voltage signal (Vdc) and a continuous current a current signal (Idc) for providing an output voltage signal (Vout) and an output current signal (Iout) to the output terminal (120), the mobile device (104) comprising a device end connector (140) and a battery ( 150), the device end connector (140) can be detachably connected to the output terminal (120) to receive voltage and current transmitted from the output terminal (120), and the device end connector (140) And a power input path between the battery (150), the adaptive power converter (110) includes: a power conversion circuit (211) for converting a source voltage signal (Vs) and a source current signal (Is Converting into the DC voltage signal (Vdc) and the DC current signal (Idc); a communication interface (213) for transmitting the data message (The DATA), and can output the direct current voltage signal (Vdc) and said DC current signal (Idc) to the charging line (130), and having a power between the power conversion circuit (211) and the communication interface (213) An output path; and a power supply terminal control circuit (219) coupled to the power conversion circuit (211) and the communication interface (213) for receiving the data signal (DATA) and capable of controlling the power conversion circuit (211) Operation of the mobile device (104), according to the sensing result of the signal (Vin; Iin; VB; IB) on the power input path, through the device end connector (140), the charging line ( 130), and the communication interface (213) transmits the data signal (DATA) to the power supply terminal control circuit (219), and the power supply terminal control circuit (219) controls the power source according to the content of the data signal (DATA) A conversion circuit (211) adjusts a magnitude of at least one of the direct current signal (Idc) and the direct current voltage signal (Vdc) to control a voltage drop of the charging line (130) below a predetermined threshold. The adaptive power converter (110) of claim 17, further comprising: a power supply sensing circuit (217) coupled to the power supply terminal control circuit (219) for sensing the power output path Signal (Vdc; Idc); wherein the mobile device (104) is capable of transmitting a device terminal voltage value (DSV) corresponding to the signal (Vin; Iin; VB; IB) on the power input path through the data signal (DATA) notifying the power supply terminal control circuit (219), and the power supply terminal control circuit (219) is capable of calculating a corresponding power supply terminal voltage value (CSV) according to the sensing result of the power supply terminal sensing circuit (217). And calculating a difference between the power supply terminal voltage value (CSV) and the device terminal voltage value (DSV) to generate a voltage drop estimation value of the charging line (130); wherein the power supply terminal control circuit (219) Depending on the voltage drop estimate, the power conversion circuit (211) is controlled to adjust the magnitude of at least one of the DC current signal (Idc) and the DC voltage signal (Vdc) to the charging line (130) Pressure drop maintenance Below the predetermined threshold. The adaptive power converter (110) of claim 17, further comprising: a power supply sensing circuit (217) coupled to the power supply terminal control circuit (219) for sensing the power output path The signal (Vdc; Idc); wherein the power supply terminal control circuit (219) is capable of calculating a corresponding power supply terminal voltage value (CSV) according to the sensing result of the power supply terminal sensing circuit (217), and transmitting the A data signal (DATA) notifies the mobile device voltage value (CSV) to the mobile device (104), and the mobile device (104) is capable of calculating the power supply terminal voltage value (CSV) and a signal corresponding to the power input path (Vin) a difference between a device terminal voltage value (DSV) of Iin; VB; IB) to generate a voltage drop estimate of the charging line (130); wherein the mobile device (104) is capable of relying on the voltage The down-estimation measurement generates a corresponding adjustment indication, and transmits the adjustment indication to the power supply terminal control circuit (219) through the data signal (DATA), and the power supply terminal control circuit (219) can control the power supply according to the adjustment indication The conversion circuit (211) adjusts at least one of the direct current signal (Idc) and the direct current voltage signal (Vdc) The size is such that the voltage drop of the charging line (130) is maintained below the predetermined threshold. The adaptive power converter (110) of claim 17, wherein the mobile device (104) is capable of calculating a target voltage value (VTG) and a signal corresponding to the power input path (Vin; Iin; VB; IB) a difference between a device terminal voltage value (DSV) to generate a voltage drop estimate of the charging line (130); wherein the mobile device (104) is capable of generating a voltage based on the voltage drop estimate Corresponding adjustment indication, and transmitting the adjustment indication to the power supply terminal control circuit (219) through the data signal (DATA), and the power supply terminal control circuit (219) can according to the adjustment The full indication control controls the power conversion circuit (211) to adjust the magnitude of at least one of the direct current signal (Idc) and the direct current voltage signal (Vdc) to maintain the voltage drop of the charging line (130) below the predetermined threshold value. The adaptive power converter (110) of claim 17, further comprising: a power supply sensing circuit (217) coupled to the power supply terminal control circuit (219) for sensing the power output path a signal (Vdc; Idc); wherein the mobile device (104) is capable of transmitting a device-side current value (DSI) corresponding to the signal (Vin; Iin; VB; IB) on the power input path through the data signal (DATA) notifying the power supply terminal control circuit (219), and the power supply terminal control circuit (219) is capable of calculating a corresponding power supply terminal current value (CSI) according to the sensing result of the power supply terminal sensing circuit (217), Comparing the current value (CSI) of the power supply terminal with the current value (DSI) of the device; wherein, if the current value (CSI) of the power supply terminal is greater than a predetermined value of the device current (DSI), the power supply terminal controls The circuit (219) is capable of controlling the power conversion circuit (211) to decrease a magnitude of at least one of the DC current signal (Idc) and the DC voltage signal (Vdc) to reduce the output voltage signal (Vout) and the output current The size of at least one of the signals (Iout). The adaptive power converter (110) of claim 17, further comprising: an output switch (215) located on the power output path and controlled by the power supply terminal control circuit (219); and a power supply The end sensing circuit (217) is coupled to the power supply terminal control circuit (219) for sensing a signal (Vdc; Idc) on the power output path; wherein the mobile device (104) is capable of responding to the power a device-side current value (DSI) of the signal (Vin; Iin; VB; IB) on the input path, through the data signal (DATA) notifying the power supply terminal control circuit (219), and the power supply terminal control circuit (219) is capable of calculating a corresponding power supply terminal current value (CSI) according to the sensing result of the power supply terminal sensing circuit (217), Comparing the power supply terminal current value (CSI) with the device terminal current value (DSI), and if the power supply terminal current value (CSI) is greater than the device terminal current value (DSI) exceeds a predetermined value, the power supply terminal control circuit (219) The output switch (215) can be turned off to reduce the magnitude of at least one of the output voltage signal (Vout) and the output current signal (Iout). The adaptive power converter (110) of claim 17, further comprising: a power supply sensing circuit (217) coupled to the power supply terminal control circuit (219) for sensing the power output path The signal (Vdc; Idc); wherein the power supply terminal control circuit (219) is capable of calculating a corresponding power supply terminal current value (CSI) according to the sensing result of the power supply terminal sensing circuit (217), and transmitting the A data signal (DATA) notifies the mobile device (104) of the power supply terminal current value (CSI), and the mobile device (104) is capable of comparing the power supply terminal current value (CSI) with a signal corresponding to the power input path (Vin) a device-side current value (DSI) of Iin; VB; IB); wherein the mobile device (104) is capable of transmitting a current value (CSI) greater than a predetermined value of the device current value (DSI) Generating a down regulation indication, and transmitting the down regulation indication to the power supply terminal control circuit (219) through the data signal (DATA), and the power supply terminal control circuit (219) can control the power conversion circuit according to the down regulation indication ( 211) decreasing a size of at least one of the DC current signal (Idc) and the DC voltage signal (Vdc), At least a reduction of the magnitude of the output voltage signal (Vout) and the output current signal (lout) in. The adaptive power converter (110) of claim 17 further comprising: An output switch (215) is disposed on the power output path and controlled by the power supply terminal control circuit (219); and a power supply terminal sensing circuit (217) coupled to the power supply terminal control circuit (219), For sensing a signal (Vdc; Idc) on the power output path; wherein the power supply terminal control circuit (219) is capable of calculating a corresponding power supply terminal current according to the sensing result of the power supply terminal sensing circuit (217) a value (CSI), and the power supply terminal current value (CSI) is notified to the mobile device (104) through the data signal (DATA), and the mobile device (104) can compare the current value (CSI) of the power supply terminal with the corresponding a device-side current value (DSI) of the signal (Vin; Iin; VB; IB) on the power input path, if the current value (CSI) of the power supply terminal is greater than a predetermined value of the device current value (DSI), The mobile device (104) is capable of generating a down regulation indication and transmitting the down regulation indication to the power supply terminal control circuit (219) through the data signal (DATA), and the power supply terminal control circuit (219) is capable of according to the down regulation indication Turning off the output switch (215) to lower the output voltage signal (Vout) and the output current signal (Iout) At least one of size. The adaptive power converter (110) of claim 17, wherein the mobile device (104) is capable of comparing a target current value (ITG) with a signal corresponding to the power input path (Vin; Iin; VB; IB) a device-side current value (DSI); wherein, if the target current value (ITG) is greater than the device-side current value (DSI) exceeds a predetermined value, the mobile device (104) can generate a down-regulation indication, and Transmitting the down regulation indication to the power supply terminal control circuit (219) through the data signal (DATA), and the power supply terminal control circuit (219) is capable of controlling the power conversion circuit (211) to reduce the DC current according to the down regulation indication a magnitude of at least one of a signal (Idc) and the DC voltage signal (Vdc) to reduce the output voltage signal (Vout) and the input The size of at least one of the current signals (Iout). The adaptive power converter (110) of claim 17, further comprising: an output switch (215) located on the power output path and controlled by the power supply terminal control circuit (219); wherein The mobile device (104) is capable of comparing a target current value (ITG) with a device-side current value (DSI) corresponding to a signal (Vin; Iin; VB; IB) on the power input path, if the target current value (ITG) When the device current value (DSI) is greater than a predetermined value, the mobile device (104) can generate a down regulation indication, and transmit the down regulation indication to the power supply terminal control circuit (219) through the data signal (DATA). And the power supply terminal control circuit (219) can turn off the output switch (215) according to the down regulation indication to reduce the size of at least one of the output voltage signal (Vout) and the output current signal (Iout). The adaptive power converter (110) of claim 17, wherein the power supply terminal control circuit (219) is capable of generating a reference voltage signal (Vref) and a reference current signal according to the content of the data signal (DATA). (Iref), and the reference voltage signal (Vref) and the reference current signal (Iref) are respectively used to control the power conversion circuit (211) to adjust the DC voltage signal (Vdc) and the DC current signal (Idc). The adaptive power converter (110) of claim 27, wherein the power supply terminal control circuit (219) comprises: a first digital to analog circuit (310) coupled to the power conversion circuit (211), For generating the reference current signal (Iref) according to a first digit value (D1), and using the reference current signal (Iref) to control the power conversion circuit (211) to adjust the size of the DC current signal (Idc); a two-digit analog analog circuit (320) coupled to the power conversion circuit (211) for use Generating the reference voltage signal (Vref) according to a second digit value (D2), and using the reference voltage signal (Vret) to control the power conversion circuit (211) to adjust the magnitude of the DC voltage signal (Vdc); The end digital processing circuit (350) is coupled to the communication interface (213), the first digital to analog circuit (310), and the second digital analog circuit (320) for using the communication interface (213) The content of the data signal (DATA) transmitted is adjusted to at least one of the first digit value (D1) and the second digit value (D2). The adaptive power converter (110) of claim 28, further comprising: a power supply sensing circuit (217) for sensing a signal (Vdc; Idc) on the power output path to generate a An output voltage sensing signal (Svo) and an output current sensing signal (Sio); wherein the power supply terminal control circuit (219) further includes: a first power supply end analog-to-digital circuit (330) coupled to the power supply The end sensing circuit (217) and the power supply terminal digital processing circuit (350) are configured to convert the output voltage sensing signal (Svo) into an output voltage sensing value (Dvo); and a second power supply end analogy The digital circuit (340) is coupled between the power supply sensing circuit (217) and the power supply digital processing circuit (350) for converting the output current sensing signal (Sio) into an output current sensing a value (Dio); wherein the power supply terminal digital processing circuit (350) is further configured to calculate a power supply terminal voltage value (CSV) according to the output voltage sensing value (Dvo), and calculate according to the output current sensing value (Dio) A power supply terminal current value (CSI) is obtained, and is adjusted according to the power supply terminal voltage value (CSV) and the power supply terminal current value (CSI) A first digital value (D1) or the second digital value (D2). The adaptive power converter (110) of claim 29, further comprising: An output switch (215) is located on the power output path and is controlled by the power supply terminal digital processing circuit (350); wherein the power supply terminal digital processing circuit (350) can turn off the output switch (215) to reduce The magnitude of at least one of the output voltage signal (Vout) and the output current signal (Iout). The adaptive power converter (110) of claim 28, further comprising: a power supply sensing circuit (217) for sensing a signal (Vdc; Idc) on the power output path to generate a An output voltage sensing signal (Svo) and an output current sensing signal (Si0): wherein the power supply terminal control circuit (219) further includes: a power supply terminal multiplexer (440) coupled to the power supply terminal for sensing a circuit (217) capable of selectively outputting the output voltage sensing signal (Svo) or the output current sensing signal (Sio) according to a control of a power supply terminal selection signal (M1); and a first power supply terminal analogy The digitizing circuit (330) is coupled between the power supply terminal multiplexer (440) and the power supply terminal digital processing circuit (350) for converting the output signal of the power supply terminal multiplexer (440) into a corresponding The power supply terminal sensing value (Dout); wherein the power supply terminal digital processing circuit (350) can generate the power supply terminal selection signal (M1), and can calculate a power supply terminal voltage according to the power supply terminal sensing value (Dout) Value (CSV) or a supply current value (CSI) based on the supply terminal voltage value (CSV) and the supply terminal current value (CSI) Adjusting the first digital value (D1) or the second digital value (D2). The adaptive power converter (110) of claim 31, further comprising: an output switch (215) located on the power output path, controlled by the power supply terminal digital processing circuit (350); The power supply terminal digital processing circuit (350) can turn off the output switch (215) to reduce the size of at least one of the output voltage signal (Vout) and the output current signal (Iout). The adaptive power converter (110) of claim 28, wherein the power supply terminal digital processing circuit (350) is capable of transmitting the signal (Vdc; Idc) corresponding to the power output path using the data signal (DATA) A power supply terminal voltage value (CSV) or a power supply terminal current value (CSI) to the mobile device (104). The adaptive power converter (110) of any one of claims 17 to 33, wherein the mobile charger (902) further comprises: a receiving terminal (920); and a power terminal connector (940) The receiving terminal (920) is detachably coupled to the receiving terminal (920); wherein the charging line (130) is coupled to the receiving terminal (920) and the output terminal (120) The DC voltage signal (Vdc) and the DC current signal (Idc) are received between the receiving terminal (920), the power terminal connector (940), and the communication interface (213). A charging control circuit (160) for use in a mobile device (104), wherein the mobile device (104) is capable of being charged via a mobile charger (102; 902), the mobile charger (102; 902) comprising An adaptive power converter (110), an output terminal (120), and a charging line (130), the adaptive power converter (110) includes a power conversion circuit (211) and a communication interface (213), The power conversion circuit (211) is configured to convert a source voltage signal (Vs) and a source current signal (Is) into a DC voltage signal (Vdc) and a DC current signal (Idc), and the communication interface (213) is used for Transmitting a data signal (DATA) and outputting the DC voltage signal (Vdc) and the DC current a signal (Idc), and a power output path between the power conversion circuit (211) and the communication interface (213), the charging line (130) coupled to the adaptive power converter (110) and the output terminal Between (120) for transmitting the data signal (DATA), and capable of receiving the DC voltage signal (Vdc) and the DC current signal (Idc) to provide an output voltage signal (Vout) and an output current signal ( Iout) to the output terminal (120), the mobile device (104) includes a device end connector (140) and a battery (150), the device end connector (140) can be detachably connected to the output terminal (120), to receive the voltage and current transmitted by the output terminal (120), and a power input path between the device end connector (140) and the battery (150), the charging control circuit (160) The utility model comprises: an input switch (261) located on the power input path; and a device end control circuit (265) coupled to the device end connector (140) and the input switch (261) for controlling the The switching operation of the input switch (261) can be based on the signal on the power input path (Vin; Iin; VB; IB) The sensing result transmits the data signal (DATA) to the adaptive power converter (110) through the device end connector (140), the charging line (130), and the communication interface (213), and the adaptation The power converter (110) controls the power conversion circuit (211) to adjust the size of at least one of the DC current signal (Idc) and the DC voltage signal (Vdc) according to the content of the data signal (DATA). The voltage drop of the charging line (130) is controlled below a predetermined threshold. The charging control circuit (160) of claim 35, wherein the device-side control circuit (265) is capable of transmitting a device-side voltage value corresponding to a signal (Vin; Iin; VB; IB) on the power input path ( DSV), the adaptive power converter (110) is notified through the data signal (DATA), and the adaptive power converter (110) is capable of calculating the device end a difference between a voltage value (DSV) and a supply terminal voltage value (CSV) corresponding to a signal (Vdc; Idc) on the power output path to generate a voltage drop estimate of the charging line (130); The adaptive power converter (110) is configured to control the power conversion circuit (211) to adjust the size of at least one of the DC current signal (Idc) and the DC voltage signal (Vdc) according to the voltage drop estimation value. And maintaining the voltage drop of the charging line (130) below the predetermined threshold. The charging control circuit (160) of claim 36, wherein the device-side control circuit (265) is capable of signaling a signal on the power input path according to a device-side sensing circuit (263) (Vin; Iin; VB; The sensing result of IB) calculates the device terminal voltage value (DSV) or reads the device terminal voltage value (DSV) from other circuits. The charging control circuit (160) of claim 35, wherein the adaptive power converter (110) is capable of supplying a signal corresponding to a signal (Vdc; Idc) on the power output path through the data signal (DATA) The terminal voltage value (CSV) notifies the device terminal control circuit (265), and the device terminal control circuit (265) is capable of calculating the voltage value of the power supply terminal (CSV) and the signal corresponding to the power input path (Vin; Iin; VB) a difference between a device terminal voltage value (DSV) of IB) to generate a voltage drop estimate of the charging line (130); wherein the device end control circuit (265) is capable of estimating the voltage drop according to the voltage drop The measured value generates a corresponding adjustment indication, and transmits the adjustment indication to the adaptive power converter (110) through the data signal (DATA), and the adaptive power converter (110) can control the power supply according to the adjustment indication. A conversion circuit (211) adjusts a magnitude of at least one of the direct current signal (Idc) and the direct current voltage signal (Vdc) to maintain a voltage drop of the charging line (130) less than the predetermined threshold. The charging control circuit (160) of claim 38, wherein the device side control circuit (265) calculating the device terminal voltage value (DSV) according to the sensing result of the signal (Vin; Iin; VB; IB) on the power input path by a device-side sensing circuit (263), or from other The circuit reads the device terminal voltage value (DSV). The charging control circuit (160) of claim 35, wherein the device side control circuit (265) is capable of calculating a target voltage value (VTG) and a signal corresponding to the power input path (Vin; Iin; VB; IB). a difference between a device terminal voltage value (DSV) to generate a voltage drop estimate for the charging line (130); wherein the device end control circuit (265) is capable of estimating the voltage according to the voltage drop Generating a corresponding adjustment indication, and transmitting the adjustment indication to the adaptive power converter (110) through the data signal (DATA), and the adaptive power converter (110) can control the power conversion circuit according to the adjustment indication (211) adjusting a magnitude of at least one of the direct current signal (Idc) and the direct current voltage signal (Vdc) to maintain a voltage drop of the charging line (130) less than the predetermined threshold. The charging control circuit (160) of claim 40, wherein the device-side control circuit (265) is capable of signaling a signal on the power input path according to a device-side sensing circuit (263) (Vin; Iin; VB; The sensing result of IB) calculates the device terminal voltage value (DSV) or reads the device terminal voltage value (DSV) from other circuits. The charge control circuit (160) of claim 35, wherein the device end control circuit (265) is capable of matching a device current value corresponding to a signal (Vin; Iin; VB; IB) on the power input path ( DSI) notifying the adaptive power converter (110) through the data signal (DATA), and the adaptive power converter (110) is capable of comparing the device current value (DSI) with a signal corresponding to the power output path (Vdc; Idc) a power supply terminal current value (CSI); wherein, if the power supply terminal current value (CSI) is greater than the device terminal current value (DSI) exceeds one a predetermined value, the adaptive power converter (110) capable of reducing the magnitude of at least one of the DC current signal (Idc) and the DC voltage signal (Vdc) to reduce the output voltage signal (Vout) and the output The size of at least one of the current signals (Iout). The charging control circuit (160) of claim 42, wherein the device-side control circuit (265) is capable of signaling a signal on the power input path according to a device-side sensing circuit (263) (Vin; Iin; VB; The sensing result of IB) calculates the device terminal current value (DSI) or reads the device terminal current value (DSI) from other circuits. The charging control circuit (160) of claim 35, wherein the adaptive power converter (110) is capable of supplying a signal corresponding to a signal (Vdc; Idc) on the power output path through the data signal (DATA) The terminal current value (CSI) notifies the device terminal control circuit (265), and the device terminal control circuit (265) is capable of comparing the power supply terminal current value (CSI) with a signal corresponding to the power input path (Vin; Iin; VB) a device-side current value (DSI) of IB); wherein the device-side control circuit (265) is capable of generating a current if the supply-side current value (CSI) is greater than the device-side current value (DSI) by more than a predetermined value Downregulating the indication, and transmitting the down-regulation indication to the adaptive power converter (110) through the data signal (DATA), and the adaptive power converter (110) can adjust the DC current signal according to the down-regulation indication The size of at least one of (Idc) and the DC voltage signal (Vdc) to reduce the magnitude of at least one of the output voltage signal (Vout) and the output current signal (Iout). The charging control circuit (160) of claim 44, wherein the device-side control circuit (265) is capable of signaling a signal on the power input path according to a device-side sensing circuit (263) (Vin; Iin; VB; The sensing result of IB) calculates the device current value (DSI), Or read the device side current value (DSI) from other circuits. The charging control circuit (160) of claim 35, wherein the device side control circuit (265) is capable of comparing a target current value (ITG) with a signal corresponding to the power input path (Vin; Iin; VB; IB). a device-side current value (DSI); wherein the device-side control circuit (265) is capable of generating a down-conversion indication if the target current value (ITG) is greater than the device-side current value (DSI) by more than a predetermined value And transmitting the down-regulation indication to the adaptive power converter (110) through the data signal (DATA), and the adaptive power converter (110) can adjust the DC current signal (Idc) according to the down-regulation indication And a magnitude of at least one of the DC voltage signals (Vdc) to reduce a magnitude of at least one of the output voltage signal (Vout) and the output current signal (Iout). The charging control circuit (160) of claim 46, wherein the device-side control circuit (265) is capable of signaling a signal on the power input path according to a device-side sensing circuit (263) (Vin; Iin; VB; The sensing result of IB) calculates the device terminal current value (DSI) or reads the device terminal current value (DSI) from other circuits. The charging control circuit (160) of claim 35, wherein the mobile device (104) further comprises: a device-side sensing circuit (263) for sensing a signal on the power input path (Vin; Iin) VB; IB) to generate an input voltage sensing signal (Svi) and an input current sensing signal (Sii); wherein the device-side control circuit (265) comprises: a first device-side analog-to-digital circuit ( 510), coupled to the device end sensing circuit (263) for converting the input voltage sensing signal (Svi) into an input voltage sensing value (Dvi); a second device-side analog-to-digital circuit (520) coupled to the device-side sensing circuit (263) for converting the input current sensing signal (Sii) into an input current sensing value (Dii); a device-side digital processing circuit (530) coupled to the device-side connector (140), the input switch (261), the first device-side analog-to-digital circuit (510), and the second device-side analogy The digital circuit (520) is configured to calculate a device terminal voltage value (DSV) according to the input voltage sensing value (Dvi), and calculate a device terminal current value (DSI) according to the input current sensing value (Dii) The device end digital processing circuit (530) is further capable of generating the data signal (DATA) according to the device terminal voltage value (DSV) or the device terminal current value (DSI) and controlling the switching operation of the input switch (261). . The charging control circuit (160) of claim 35, wherein the mobile device (104) further comprises: a device-side sensing circuit (263) for sensing a signal on the power input path (Vin; Iin) VB; IB) to generate an input voltage sensing signal (Svi) and an input current sensing signal (Sii); wherein the device side control circuit (265) comprises: a device-side multiplexer (620), The device is coupled to the device-side sensing circuit (263) and is capable of selectively outputting the input voltage sensing signal (Svi) or the input current sensing signal (Sii) according to a device-side selection signal (M2) control. a first device-side analog-to-digital circuit (510) coupled to an output of the device-side multiplexer (620) for converting an output signal of the device-side multiplexer (620) into a corresponding one a device-side sensing value (Din); and a device-side digital processing circuit (530) coupled to the device-side connector (140), the An input switch (261), the first device-side analog-to-digital circuit (510), and the device-side multiplexer (620) for generating the device-side selection signal (M2), and capable of sensing according to the device end The value (Din) calculates a device terminal voltage value (DSV) or a device terminal current value (DSI); wherein the device end digital processing circuit (530) is further capable of depending on the device terminal voltage value (DSV) or the device end The current value (DSI) generates the data signal (DATA) and controls the switching operation of the input switch (261). The charging control circuit (160) of claim 35, wherein the device-side control circuit (265) is capable of responding to a device-side voltage value of a signal (Vin; Iin; VB; IB) on the power input path ( When the DSV) exceeds a threshold voltage value, or when a device-side current value (DSI) corresponding to a signal (Vin; Iin; VB; IB) corresponding to the power input path exceeds a threshold current value, the input switch is turned off. (261).