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WO2016026260A1 - Circuit de stabilisation de tension et d'équilibrage de courant non isolé et système d'alimentation électrique - Google Patents

Circuit de stabilisation de tension et d'équilibrage de courant non isolé et système d'alimentation électrique Download PDF

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Publication number
WO2016026260A1
WO2016026260A1 PCT/CN2015/070134 CN2015070134W WO2016026260A1 WO 2016026260 A1 WO2016026260 A1 WO 2016026260A1 CN 2015070134 W CN2015070134 W CN 2015070134W WO 2016026260 A1 WO2016026260 A1 WO 2016026260A1
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WIPO (PCT)
Prior art keywords
current sharing
current
voltage
unit
output
Prior art date
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Ceased
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PCT/CN2015/070134
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English (en)
Chinese (zh)
Inventor
徐建生
莫少勇
张振兴
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators

Definitions

  • the invention belongs to the technical field of power supply, and particularly relates to a non-isolated voltage-stabilizing current sharing circuit and a power supply system.
  • the communication equipment room usually uses multiple power supply lines in parallel to form an electric resource pool, and combines the currents in the multiple power supply lines to be output to the communication device, so as to be different.
  • the communication device enables flexible power distribution.
  • the impedance adjusting circuit includes a variable resistor, which adjusts the resistance of the variable resistor according to the current on the power supply line to balance the impedance of the power supply line, thereby keeping the current of each power supply line stable Balance; when the input voltage difference of the power supply line is large, the heat loss will also increase, the temperature will increase accordingly, and some of the power will be converted into heat energy, and the power supply efficiency is low.
  • a non-isolated voltage-stabilizing current sharing circuit includes a first controller, and the non-isolated voltage-stabilizing current sharing circuit further includes:
  • a first inductor a second inductor, a first regulated current sharing unit, a voltage sampling unit, and a current sampling unit;
  • the first end of the first inductor is connected to the first direct current
  • the first end of the second inductor is outputting the second direct current
  • the second end of the first inductor and the second end of the second inductor are respectively connected a first input end and a second input end of the first voltage stabilizing current sharing unit, wherein an output end of the first voltage stabilizing current sharing unit outputs a direct current to a load, and an input end and an output end of the voltage sampling unit are respectively connected
  • An output end of the first voltage stabilizing current sharing unit and the first controller a first sampling end of the current sampling unit receives a loop current output by a load, and a second sampling end and an output end of the current sampling unit Connecting the loop end of the first voltage stabilizing current sharing unit and the first controller, and the first controller is further connected to a DC power regulating end of the first voltage stabilizing current sharing unit;
  • the first regulated current sharing unit Discharging the first direct current to the first regulated current sharing unit, and the first regulated current sharing unit outputs the direct current outputted by the first inductor to The load, the loop current output by the load is continuously outputted to the second inductor through the first regulated current sharing unit, and the second inductor outputs the energy after the loop current is stored a direct current, the current value of the second direct current is equal to a current value of the first direct current;
  • the voltage sampling unit samples an output voltage of the non-isolated stabilized current sharing circuit, and feeds back a voltage sampling signal to the a first controller, the current sampling unit performs current sampling on the loop current, and feeds back a current sampling signal to the first controller, the first controller according to the voltage sampling signal and the current sampling signal Outputting a first control signal to the first regulated current sharing unit; when an output voltage of the non-isolated regulated current sharing circuit is greater than a preset current sharing voltage value and/or the loop current is greater than a preset current sharing
  • the present invention also provides a power supply system including a plurality of power supply circuits, a current shunt circuit, and a plurality of current sharing circuits, wherein the current shunt circuit shunts an output current of the power circuit and outputs the a current sharing circuit, wherein the current combining module in the current sharing circuit combines any two currents output by the current dividing circuit to output a first direct current; the power supply system further includes the above non-isolated And a voltage stabilizing current sharing circuit, wherein the first inductor in the non-isolated voltage stabilizing current sharing circuit is connected to the first direct current from the current combining module.
  • the invention adopts a non-isolated voltage-stabilizing current sharing circuit including a first inductor, a second inductor, a first voltage-stabilizing current sharing unit, a voltage sampling unit and a current sampling unit; the first voltage-stabilizing current sharing unit outputs the first inductance
  • the loop currents of the direct current and the load output are respectively outputted to the load and the second inductor, and the symmetric energy storage of the first inductor and the second inductor ensures that the current value of the second direct current output of the second inductor is equal to the first inductor.
  • the current value of the first direct current the voltage sampling unit samples the output voltage of the first regulated current sharing unit, and feeds back the voltage sampling signal to the first controller, and at the same time, the current sampling unit performs current sampling on the loop current, and feeds back the current. Sampling the signal to the first controller, and then outputting, by the first controller, the first control signal according to the voltage sampling signal and the current sampling signal to drive the output of the first voltage-stabilizing current sharing unit to the non-isolated voltage-stabilizing current sharing circuit
  • the voltage and output current are adjusted to maintain a stable output voltage and output current.
  • the first controller can drive the first voltage-stabilizing current sharing unit to adjust the output voltage of the non-isolated voltage-stabilizing current sharing circuit in combination with the voltage sampling signal fed back by the voltage sampling unit, even if the input pressure difference changes, the current controller can still Maintains a stable output voltage to maintain a stable output voltage without being limited by the input voltage difference; and because the non-isolated regulated current sharing circuit has a stable output voltage, and there is no increase in input voltage difference A device with a corresponding increase in heat loss, so that the entire circuit consumes less reactive power due to voltage instability and heat loss during operation, thereby also improving power supply efficiency.
  • FIG. 1 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 1 of the present invention
  • FIG. 2 is a circuit diagram showing an example of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic circuit diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 3 of the present invention.
  • FIG. 6 is a circuit diagram showing an example of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 3 of the present invention.
  • FIG. 7 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 4 of the present invention.
  • FIG. 8 is a circuit diagram showing an example of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 4 of the present invention.
  • FIG. 9 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit including a buck unit according to Embodiment 5 of the present invention.
  • FIG. 10 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit including a buck unit according to Embodiment 5 of the present invention.
  • FIG. 11 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit including a buck unit according to Embodiment 5 of the present invention.
  • FIG. 12 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit including a buck unit according to Embodiment 5 of the present invention.
  • FIG. 13 is an internal structural diagram of a buck unit in a non-isolated voltage stabilizing current sharing circuit according to Embodiment 5 of the present invention.
  • FIG. 14 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 6 of the present invention.
  • FIG. 15 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 6 of the present invention.
  • FIG. 16 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 6 of the present invention.
  • FIG. 17 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 6 of the present invention.
  • FIG. 18 is an internal structural diagram of a buck unit in a non-isolated voltage stabilizing current sharing circuit according to Embodiment 6 of the present invention.
  • FIG. 19 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 7 of the present invention.
  • FIG. 20 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 7 of the present invention.
  • FIG. 21 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 7 of the present invention.
  • FIG. 22 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 7 of the present invention.
  • FIG. 23 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 7 of the present invention.
  • FIG. 24 is a schematic structural diagram of a non-isolated voltage stabilizing current sharing circuit according to Embodiment 7 of the present invention.
  • FIG. 25 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 7 of the present invention.
  • 26 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 7 of the present invention.
  • FIG. 27 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 7 of the present invention.
  • FIG. 28 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 7 of the present invention.
  • FIG. 29 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 7 of the present invention.
  • FIG. 30 is a schematic structural diagram of a non-isolated voltage-stabilizing current sharing circuit according to Embodiment 7 of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • FIG. 1 shows a non-isolated voltage-stabilizing current sharing circuit provided by this embodiment. For convenience of description, only parts related to the embodiment are shown, which are described in detail as follows:
  • the non-isolated regulated current sharing circuit includes a first controller 100, which may be a microcontroller or a pulse width modulator.
  • the non-isolated regulated current sharing circuit further includes a first inductor L1, a second inductor L2, a first regulated current sharing unit 200, a voltage sampling unit 300, and a current sampling unit 400.
  • the first end of the first inductor L1 is connected to the first direct current Vin+, the first end of the second inductor L2 is outputting the second direct current Vin-, and the second end of the first inductor L1 and the second end of the second inductor L2 are respectively connected
  • the first input end and the second input end of the voltage stabilizing current sharing unit 200, the output end of the first voltage stabilizing current sharing unit 200 outputs DC power to the load 500, and the input end and the output end of the voltage sampling unit 300 are respectively connected to the first stable
  • the output end of the voltage equalization unit 200 and the first controller 100, the first sampling end of the current sampling unit 400 receives the loop current output by the load 500, and the second sampling end and the output end of the current sampling unit 400 are respectively connected to the first voltage regulator.
  • the loop end of the current sharing unit 200 and the first controller 100 are further connected to the DC power regulating end of the first voltage stabilizing current sharing unit 200.
  • the first inductor L1 stores the first DC power Vin+ and outputs the same to the first voltage stabilizing current unit 200.
  • the first voltage stabilizing current unit 200 outputs the DC current outputted by the first inductor L1 to the load 500, and the load 500
  • the output loop current is continuously outputted to the second inductor L2 through the first regulated current sharing unit 200, and the second inductor L2 stores the second direct current Vin-, the current of the second direct current Vin- after storing the loop current.
  • the first value is equal to the DC current value Vin +; output voltage sampling unit 300 to non-isolated current-regulator circuit (i.e., the output voltage direct current to the load 500) is sampled, and the sampled feedback voltage V S to the first control signal
  • the current sampling unit 400 samples the current of the loop current output by the load 500, and feeds back the current sampling signal I S to the first controller 100.
  • the first controller 100 outputs the first according to the voltage sampling signal and the current sampling signal.
  • the first regulated current sharing unit 200 reduces the output voltage and/or the output current of the non-isolated regulated current sharing circuit according to the first control signal Ctrl 1 ; when the output voltage of the non-isolated regulated current sharing circuit is less than the pre- When the current sharing voltage value and/or the loop current is less than the preset current sharing current value, the first voltage stabilizing current sharing unit 200 increases the output voltage of the non-isolated voltage regulating current sharing circuit according to the first control signal Ctrl 1 and/or Or output current.
  • the preset current sharing voltage value and the preset current sharing current value respectively refer to: non-isolated voltage regulation current flow when the non-isolated voltage-stabilizing current sharing circuit supplies power to the power supply line and needs to achieve voltage regulation and current balance.
  • the output voltage value and output current value of the circuit are equivalent to the positive end and the negative end of the power supply line, the positive end is connected to the first direct current Vin+, and the negative end is outputting the second direct current Vin- .
  • the normal operation of the above non-isolated regulated current sharing circuit is not limited by the input voltage difference with respect to the prior art mentioned in the background art.
  • the power supply efficiency is actually related to the "stabilization of the output voltage" and the "heat loss of the device".
  • the low power supply efficiency is caused by the excessive reactive power generated during the power supply, and the output voltage exceeds the line.
  • the rated voltage of the load can be increased, the reactive power is increased, and the heat loss of the device in the circuit is increased to increase the reactive power.
  • adjusting the output voltage in real time can stabilize the output voltage, thereby reducing the reactive power during power supply, and the device used in the non-isolated voltage-stabilizing current sharing circuit is not
  • the input pressure difference becomes large, the heat loss increases, and the reactive power at the time of power supply also decreases, so that the effect of improving the power supply efficiency can be achieved.
  • FIG. 2 shows an example circuit structure of the non-isolated voltage-stabilizing current sharing circuit provided by this embodiment. For convenience of description, only parts related to the embodiment are shown, which are as follows:
  • the first regulated current sharing unit 200 includes a first isolation transformer T1, a first switching transistor 201, a first freewheeling diode D1, and a second freewheeling diode D2.
  • the first end 1 of the primary winding of the first isolation transformer T1 is the DC regulation terminal of the first voltage stabilizing current sharing unit 200, and the second end 2 of the primary winding of the first isolation transformer T1 is coupled to the first controller 100.
  • the first end 3 and the second end 4 of the secondary winding of the first isolation transformer T1 are respectively connected to the controlled end and the input end of the first switch tube 201, and the output end of the first switch tube 201 and the first freewheeling diode
  • the common junction of the anode of D1 is the first input end of the first regulated current sharing unit 200, the input end of the first switching transistor 201 and the second freewheeling diode
  • the common junction of the cathode of D2 is the second input end of the first voltage stabilizing current sharing unit 200, and the cathode of the first freewheeling diode D1 and the anode of the second freewheeling diode D2 are respectively the output of the first voltage stabilizing current sharing unit 200. End and loop side.
  • the first switch tube 201 can be a MOS tube (including an NMOS tube and a PMOS tube), and an IGBT (Isolated) Gate Bipolar Transistor, insulated gate bipolar thyristor or other semiconductor device with switching characteristics.
  • the first switch tube 201 is a MOS transistor or an IGBT
  • the gate, the source, and the drain of the MOS transistor or the IGBT are respectively the controlled end, the input end, and the output end of the first switch tube 201;
  • the first switch tube 201 is specifically a PMOS tube Q1.
  • the voltage sampling unit 300 includes a first resistor R1 and a second resistor R2.
  • the first end of the first resistor R1 is an input end of the voltage sampling unit 300, and the second end of the first resistor R1 and the first end of the second resistor R2
  • the common contact is the output of the voltage sampling unit 300, and the second end of the second resistor R2 is grounded.
  • the current sampling unit 400 includes a third resistor R3 and a differential amplifier U1.
  • the common end of the first end of the third resistor R3 and the first input of the differential amplifier U1 is the first sampling end of the current sampling unit 400, and the third resistor R3
  • the common terminal of the second terminal and the second input terminal of the differential amplifier U1 is the second sampling terminal of the current sampling unit 400
  • the output terminal of the differential amplifier U1 is the output terminal of the current sampling unit 400
  • the positive power terminal and the negative power terminal of the differential amplifier U1. Connect the DC power supply VCC and ground separately.
  • the first inductor L1 stores the DC power of the first DC power Vin+, and the DC power is outputted to the load 500 after being freewheeled by the first freewheeling diode D1, and the loop current output by the load 500 flows through the second freewheeling diode D2.
  • the second inductor L2 stores the second direct current Vin- after storing the loop current, and the current value of the first direct current Vin+ is caused by the symmetric energy storage of the first inductor L1 and the second inductor L2. A current value equal to the second direct current Vin-.
  • the first resistor R1 and the second resistor R2 perform voltage sampling on the direct current output to the load, and feed back the voltage sampling signal to the first controller 100, and the third resistor R3 samples the loop current of the load, and is
  • the differential amplifier U1 differentially amplifies the sampling voltage across the third resistor R3 and outputs a corresponding current sampling signal to the first controller 100.
  • the first controller 100 outputs the first according to the voltage sampling signal V S and the current sampling signal I S .
  • the control signal Ctrl 1 is to the first isolation transformer T1, and the first control signal Ctrl 1 is isolated by the first isolation transformer T1 to control the on-off state of the PMOS transistor Q1, and the PMOS transistor Q1 is corresponding to the first control signal Ctrl 1
  • the duty cycle realizes the on-off operation, thereby adjusting the output voltage and the output current to ensure the stability of the output voltage and the output current. Specifically, when the output voltage of the non-isolated voltage-stabilizing current sharing circuit is greater than the preset current sharing voltage value and/or the loop current is greater than the preset current sharing current value, the duty ratio corresponding to the first control signal Ctrl1 is followed.
  • the output voltage and/or output current of the non-isolated voltage-stabilizing current sharing circuit is also reduced correspondingly during the corresponding on-off operation of the PMOS transistor Q1; when non-isolated When the output voltage of the constant current sharing circuit is less than the preset current sharing voltage value and/or the loop current is less than the preset current sharing current value, the duty ratio corresponding to the first control signal Ctrl 1 is according to a certain duty ratio. As the variation value increases, the output voltage and/or output current of the non-isolated voltage-stabilizing current sharing circuit is also increased correspondingly during the corresponding on-off operation of the PMOS transistor Q1.
  • the non-isolated voltage-stabilizing current sharing circuit includes a first inductor L1, a second inductor L2, a first voltage stabilizing current sharing unit 200, a voltage sampling unit 300, and a current sampling unit 400, which have a simple circuit structure and a small volume. Low cost and high power density.
  • the switching duty ratio of the first switching transistor 201 is controlled by the first controller 100 to adjust the output voltage and the output current of the non-isolated voltage stabilizing current sharing circuit, so that the input voltage difference can be limited. Maintains stable output voltage and output current, and further improves power supply efficiency.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the non-isolated voltage-stabilizing current sharing circuit provided in this embodiment is shown in FIG. 3, and further includes a third inductor L3, a fourth inductor L4, and a second.
  • the voltage equalization unit 600 is shown in FIG. 3, and further includes a third inductor L3, a fourth inductor L4, and a second.
  • the first end of the third inductor L3 and the first end of the fourth inductor L4 are respectively connected to the first end of the first inductor L1 and the first end of the second inductor L2, the second end of the third inductor L3 and the fourth inductor L4
  • the second terminal is connected to the first input end and the second input end of the second voltage stabilizing current sharing unit 600, and the DC power regulating end of the second voltage stabilizing current sharing unit 600 is connected to the first controller 100.
  • the output end and the loop end of the flow unit 600 are respectively connected to the output end and the loop end of the first voltage stabilizing current sharing unit 200.
  • the first regulated current sharing unit 200 and the second regulated current sharing unit 600 alternately operate; the third inductor L3 stores the first direct current Vin+ and outputs the third direct current Vin+' to the first The second regulated current sharing unit 600, when the second regulated current sharing unit 600 is operated, the second regulated current sharing unit 600 outputs the third direct current Vin+' freewheeling output to the load 500, and the loop current output by the load 500 passes through the first The second regulated current sharing unit 600 is continuously outputted to the fourth inductor L4, and the fourth inductor L4 stores the fourth direct current Vin-' after storing the loop current, and the current value of the fourth direct current Vin-' is equal to the third direct current.
  • a regulated current sharing unit 200 and a second regulated current sharing unit 600 when the output voltage of the non-isolated regulated current sharing circuit is greater than a preset current sharing voltage value and/or the loop current output by the load 500 is greater than a preset current sharing Current value, the first voltage regulator Flow regulator unit 200 and the second equalizing unit 600 respectively according to the first control signal and second control signals Ctrl 1 Ctrl 2 operate alternately in order to reduce non-isolated current-regulator circuit output voltage and / or output current; when the non- When the output voltage of the isolated constant current sharing circuit is less than the preset current sharing voltage value and/or the loop current is less than the preset current sharing current value, the first voltage stabilizing current sharing unit 200 and the second voltage regulating current sharing unit 600
  • the first voltage stabilizing current sharing unit 200 and the second voltage stabilizing current sharing unit 600 alternately adjust the output voltage and the output current to facilitate the non-isolated voltage-stabilizing current sharing circuit at the high current input and the load power. It can work stably when the demand is large.
  • FIG. 4 shows an example circuit structure of the non-isolated voltage-stabilizing current sharing circuit provided in this embodiment, wherein the internal structures of the first voltage stabilizing unit 200, the voltage sampling unit 300, and the current sampling unit 400 are the same as those shown in FIG. Therefore, I will not repeat them.
  • the second regulated current sharing unit 600 includes a second isolation transformer T2, a second switching transistor 601, a third freewheeling diode D3, and a fourth freewheeling diode D4.
  • the first end 1 of the primary winding of the second isolating transformer T2 is the DC regulating end of the second regulated current sharing unit 600, and the second end 2 of the primary winding of the second isolating transformer T2 is connected to the ground of the first controller 100.
  • the first end 3 and the second end 4 of the secondary winding of the second isolation transformer T2 are respectively connected to the controlled end and the input end of the second switch tube 601, and the output end of the second switch tube 601 and the third freewheeling diode D3
  • the common junction of the anode is the first input end of the second regulated current sharing unit 600, the input end of the second switching transistor 601 and the fourth freewheeling diode
  • the common junction of the cathode of D4 is the second input end of the second regulated current sharing unit 600, and the cathode of the third freewheeling diode D3 and the anode of the fourth freewheeling diode D4 are respectively outputs of the second regulated current sharing unit 600. End and loop side.
  • the second switch tube 601 and the first switch tube 201 are the same type of semiconductor switch tubes, and the semiconductor switch tubes may be MOS tubes (including NMOS tubes and PMOS tubes), IGBTs or other semiconductor devices having switching characteristics, and When the semiconductor switching transistor is a MOS transistor or an IGBT, the gate, the source and the drain of the MOS transistor or the IGBT are respectively a controlled terminal, an input terminal and an output terminal of the semiconductor switching transistor. Since the first switch tube 201 is the same as that described in the first embodiment of the present invention, it will not be described herein.
  • the second switch tube 601 when the second switch tube 601 is a MOS tube or an IGBT, the gate, the source and the drain of the MOS tube or the IGBT are respectively the controlled end, the input end and the output of the second switch tube 601. end.
  • the second switch tube 601 is specifically a PMOS tube Q2.
  • the working principle of the second voltage stabilizing current sharing unit 600 is the same as that of the first voltage stabilizing current sharing unit 200, wherein the first switching tube 201 and the second switching tube 601 are according to the first controller 100.
  • the output first control signal Ctrl 1 and the second control signal Ctrl 2 are alternately turned on, that is, when the PMOS transistor Q1 is turned on, the PMOS transistor Q2 is turned off; when the PMOS transistor Q1 is turned off, the PMOS transistor Q2 is turned on, so the first A regulated current sharing unit 200 and the second regulated current sharing unit 600 form a complementary regulated current sharing operating state, and control the output voltage and output current of the entire non-isolated regulated current sharing circuit to ensure the output voltage and The output current is stable.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the non-isolated voltage-stabilizing current sharing circuit provided in this embodiment is shown in FIG. 5, wherein the first voltage-stabilizing current sharing unit 200 further has a first continuation.
  • the first freewheeling control terminal and the second freewheeling control terminal of the first voltage stabilizing current sharing unit 200 are also connected to the first controller 100.
  • FIG. 6 shows an example circuit structure of the non-isolated voltage-stabilizing current sharing circuit provided by this embodiment, wherein the internal structures of the voltage sampling unit 300 and the current sampling unit 400 are the same as those shown in FIG. 2, and therefore will not be described again.
  • the first regulated current sharing unit 200 includes a third isolation transformer T3, a third switching transistor 203, a fourth isolation transformer T4, a fourth switching transistor 204, and a fifth switching transistor 205.
  • the first end 1 of the primary winding of the third isolation transformer T3 is the DC regulation terminal of the first regulated current sharing unit 200, and the second end 2 of the primary winding of the third isolation transformer T3 is connected to the first controller 100.
  • the first end 3 and the second end 4 of the secondary winding of the third isolation transformer T3 are respectively connected to the controlled end and the input end of the third switch tube 203, and the output end of the third switch tube 203 and the fourth switch tube 204
  • the common contact at the input end is the first input end of the first regulated current sharing unit 200
  • the common contact between the input end of the third switching tube 203 and the output end of the fifth switching tube 205 is the second of the first regulated current sharing unit 200.
  • the first end 1 of the primary winding of the fourth isolation transformer T4 is the first freewheeling control terminal of the first regulated current sharing unit 200, and the second end 2 of the primary winding of the fourth isolation transformer T4 is connected to the first control
  • the first end 3 and the second end 4 of the secondary winding of the fourth isolation transformer T4 are respectively connected to the controlled end and the input end of the fourth switch tube 204, and the controlled end of the fifth switch tube 205 is connected to the ground.
  • the second freewheeling control terminal of the first regulated current sharing unit 200, and the output end of the fourth switching transistor 204 Input terminal of the fifth switch 205 are respectively a first flow regulator and a circuit output terminal 200 of the end unit.
  • the third switch tube 203, the fourth switch tube 204, and the fifth switch tube 205 are the same type of semiconductor switch tubes, and the semiconductor switch tubes can be MOS tubes (including NMOS tubes and PMOS tubes), IGBTs, or other switching characteristics.
  • MOS tubes including NMOS tubes and PMOS tubes
  • IGBTs IGBTs
  • the third switching transistor 203 is a MOS transistor or an IGBT
  • the gate, the source, and the drain of the MOS transistor or the IGBT are respectively the controlled terminal, the input terminal, and the output terminal of the third switching transistor 203
  • the fourth switch tube 204 is a MOS transistor or an IGBT
  • the gate, the source and the drain of the MOS transistor or the IGBT are respectively the controlled end, the input end and the output end of the fourth switch tube 204
  • the fifth switch tube 205 When it is a MOS tube or IGBT, The gate, the source and the drain of the MOS transistor or the IGBT are respectively a controlled end, an input end and an output end of the fifth switch tube 205.
  • the third switch tube 203, the fourth switch tube 204, and the fifth switch tube 205 are specifically a PMOS transistor Q3, a PMOS transistor Q4, and a PMOS transistor Q5.
  • the first inductor L1 stores and stores the first DC power Vin+, and the freewheeling control signal outputted by the first controller 100 is isolated by the fourth isolation transformer T4 to drive the PMOS transistor Q4 to conduct, for the first inductor L1.
  • the output DC power is continuously discharged and output to the load 500, and the freewheeling control signal outputted by the first controller 100 drives the PMOS transistor Q6 to be turned on to re-current the loop current outputted by the load 500 and output to the second inductor L2.
  • the second inductor L2 stores the current of the loop and outputs the second direct current Vin-, and the current value of the second direct current Vin- is equal to the first direct current Vin+ due to the symmetric energy storage of the first inductor L1 and the second inductor L2. Current value.
  • the first resistor R1 and the second resistor R2 perform voltage sampling on the direct current output to the load, and feed back the voltage sampling signal to the first controller 100, and the third resistor R3 samples the loop current of the load, and the differential amplifier is used.
  • U1 differentially amplifies the sampling voltage across the third resistor R3 and outputs a corresponding current sampling signal to the first controller 100.
  • the first controller 100 outputs the first control signal according to the voltage sampling signal V S and the current sampling signal I S .
  • the first control signal Ctrl 1 is isolated by the first isolation transformer T1 to control the on-off state of the PMOS transistor Q3, and the PMOS transistor Q3 is corresponding to the first control signal Ctrl 1
  • the air ratio achieves the on-off operation, thereby adjusting the output voltage and the output current to ensure the stability of the output voltage and the output current.
  • the duty ratio corresponding to the first control signal Ctrl 1 when the output voltage of the non-isolated voltage-stabilizing current sharing circuit is greater than the preset current sharing voltage value and/or the loop current is greater than the preset current sharing current value, the duty ratio corresponding to the first control signal Ctrl 1 According to a certain duty cycle change value, the output voltage and/or output current of the non-isolated voltage-stabilizing current sharing circuit can be correspondingly reduced during the corresponding on-off operation of the PMOS transistor Q3; When the output voltage of the isolated constant current sharing circuit is less than the preset current sharing voltage value and/or the loop current is less than the preset current sharing current value, the duty ratio corresponding to the first control signal Ctrl 1 will be according to a certain duty cycle. When the ratio change value is increased, the output voltage and/or output current of the non-isolated voltage-stabilizing current sharing circuit is also increased correspondingly during the corresponding on-off operation of the PMOS transistor Q3.
  • the conduction loss can be further reduced, the power supply efficiency can be improved, and the non-isolated voltage-stabilizing current sharing circuit is suitable for the input current.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the non-isolated voltage-stabilizing current sharing circuit provided in this embodiment is shown in FIG. 7 , and further includes a fifth inductor L5, a sixth inductor L6, and a third. Regulated current sharing unit 700.
  • the first end of the fifth inductor L5 and the first end of the sixth inductor L6 are respectively connected to the first end of the first inductor L1 and the first end of the second inductor L2, and the second end of the fifth inductor L5 and the sixth inductor L6
  • the second end of the third regulated current sharing unit 700 is connected to the first input end and the second input end of the third regulated current sharing unit 700, and the DC power regulating end of the third regulated current sharing unit 700, the first freewheeling control end, and the second freewheeling control
  • the terminal is connected to the first controller 100, and the output end and the loop end of the third regulated current sharing unit 700 are respectively connected to the output end and the loop end of the first voltage stabilizing current sharing unit 200.
  • the first regulated current sharing unit 200 and the third regulated current sharing unit 700 alternately operate; the fifth inductor L5 stores the first direct current Vin+ and outputs the fifth direct current Vin+' Up to the third regulated current sharing unit 700, when the third regulated current sharing unit 700 is in operation, the third regulated current sharing unit 700 continuously outputs the fifth direct current Vin+'' to the load 500, and the circuit output by the load 500 The current is continuously outputted to the sixth inductor L6 through the third regulated current sharing unit 700, and the sixth inductor L6 stores the sixth direct current Vin-'', and the current of the sixth direct current Vin-'' Vin + is equal to the current value of the fifth DC ''; a first controller 100 outputs a third control signal Ctrl 3 1 outputs a first control signal when the Ctrl; a first controller 100 according to the voltage sampling unit 300 samples the voltage output signal and The current sampling signal output by the current sampling unit 400 outputs the first control signal Ctrl 1 and the third
  • the first voltage stabilizing current sharing unit 200 and the third voltage stabilizing current sharing unit 700 alternately adjust the output voltage and the output current to help the non-isolated voltage-stabilizing current sharing circuit at the high current input and the load power. It can work stably when the demand is large.
  • FIG. 8 shows an example circuit structure of the non-isolated voltage-stabilizing current sharing circuit provided by the embodiment, wherein the internal structures of the first voltage stabilizing unit 200, the voltage sampling unit 300, and the current sampling unit 400 are the same as those shown in FIG. Therefore, I will not repeat them.
  • the fifth isolation transformer T5, the sixth switching tube 701, the sixth isolation transformer T6, the seventh switching tube 702, and the eighth switching tube 703 are included.
  • the first end 1 of the primary winding of the fifth isolation transformer T5 is the DC regulation terminal of the third regulated current sharing unit 700, and the second end 2 of the primary winding of the fifth isolation transformer T5 is connected to the first controller 100
  • the first end 3 and the second end 4 of the secondary winding of the fifth isolation transformer T5 are respectively connected to the controlled end and the input end of the sixth switch tube 701, and the output end of the sixth switch tube 701 and the seventh switch tube 702
  • the common contact at the input end is the first input end of the third regulated current sharing unit 700
  • the common contact between the input end of the sixth switching tube 701 and the output end of the eighth switching tube 703 is the second of the third regulated current sharing unit 700.
  • the first end 1 of the primary winding of the sixth isolation transformer T6 is the first freewheeling control terminal of the third regulated current sharing unit 700, and the second end 2 of the primary winding of the sixth isolation transformer T6 is connected to the first control
  • the first end 3 and the second end 4 of the secondary winding of the sixth isolation transformer T6 are respectively connected to the controlled end and the input end of the seventh switch tube 702, and the controlled end of the eighth switch tube 703 is connected to the ground.
  • the second freewheeling control terminal of the third regulated current sharing unit 700, the output of the seventh switching transistor 702 Input terminal of the eighth switch 703 are respectively regulated third stream output unit 700 and the end of the loop.
  • the third switch tube 203, the fourth switch tube 204, the fifth switch tube 205, the sixth switch tube 701, the seventh switch tube 702, and the eighth switch tube 703 are the same type of semiconductor switch tubes, and the semiconductor switch tubes can be It is a MOS transistor (including an NMOS transistor and a PMOS transistor), an IGBT, or another semiconductor device having a switching characteristic, and when the semiconductor switching transistor is a MOS transistor or an IGBT, the gate, the source, and the drain of the MOS transistor or the IGBT are respectively The controlled end, the input end and the output end of the semiconductor switch tube.
  • MOS transistor including an NMOS transistor and a PMOS transistor
  • IGBT IGBT
  • the gate, the source, and the drain of the MOS transistor or the IGBT are respectively The controlled end, the input end and the output end of the semiconductor switch tube.
  • the third switch tube 203, the fourth switch tube 204, and the fifth switch tube 205 are the same as those described in the third embodiment of the present invention, and details are not described herein again.
  • the sixth switch 701 the seventh switch 702, and the eighth switch 703, when the sixth switch 701 is a MOS transistor or an IGBT, the gate, the source, and the drain of the MOS transistor or the IGBT are respectively sixth.
  • the seventh switch tube 702 is a MOS tube or an IGBT
  • the gate, the source and the drain of the MOS tube or the IGBT are respectively the seventh switch tube 702.
  • the sixth switch tube 701, the seventh switch tube 702, and the eighth switch tube 703 are specifically a PMOS transistor Q6, a PMOS transistor Q7, and a PMOS transistor Q8.
  • the working principle of the third regulated current sharing unit 700 is the same as that of the first regulated current sharing unit 200.
  • the third switching tube 203 and the sixth switching tube 701 are configured according to the first controller 100.
  • the output first control signal Ctrl 1 and the third control signal Ctrl 3 are alternately turned on, that is, when the PMOS transistor Q3 is turned on, the PMOS transistor Q6 is turned off; when the PMOS transistor Q3 is turned off, the PMOS transistor Q6 is turned on, so the first
  • the regulated current sharing unit 200 and the third regulated current sharing unit 700 form a complementary regulated current sharing working state, and control the output voltage and output current of the entire non-isolated voltage balanced current sharing circuit to ensure the output voltage and output.
  • the current is stable.
  • the conduction loss can be further reduced, thereby improving the power supply efficiency.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the non-isolated voltage-stabilizing current sharing circuits provided in this embodiment are respectively shown in FIG. 9, FIG. 10, FIG. 11, and FIG. 12, and the non-isolated voltage-stabilizing current sharing circuits shown in FIG. 9, FIG. 10, FIG. 11, and FIG.
  • the step-down unit 800 is further included, and the input end and the circuit end of the buck unit 800 are respectively connected to the first The output of the constant current sharing unit 200 and the current sampling unit At the first sampling end of 400, the buck unit 800 steps down the DC power input to the input terminal and outputs it through its output terminal.
  • the buck unit 800 includes a ninth switch 801, a seventh inductor L7, a first diode D11, a first capacitor C11, and a second controller 802.
  • the input end of the ninth switch 801 is the input end of the buck unit 800, and the output end of the ninth switch 801 is connected to the cathode of the first diode D11 to the first end of the seventh inductor L7, and the seventh inductor L7
  • the common end of the second end of the first capacitor C11 is the output end of the buck unit 800, and the common junction of the anode of the first diode D11 and the second end of the first capacitor C11 is the buck unit 800.
  • the controlled end of the ninth switch 801 is connected to the second controller 802.
  • the ninth switch 801, the seventh inductor L7, the first diode D11, and the first capacitor C11 constitute a buck buck circuit, and the buck buck circuit inputs the input of the ninth switch 801.
  • the DC power is stepped down and output to the load, and the step-down ratio is determined by the second controller 802.
  • the second controller 802 outputs a control signal to drive the ninth switch tube 801 to perform the on-off operation according to the corresponding duty ratio, so
  • the switching duty ratio of the nine-switch 801 determines the step-down ratio of the buck buck circuit.
  • the ninth switch tube 801 can be a MOS transistor (including an NMOS transistor and a PMOS transistor), an IGBT, or other semiconductor device having a switching characteristic.
  • the ninth switch 801 is a MOS transistor or an IGBT
  • the gate, the source and the drain of the MOS transistor or the IGBT are respectively a controlled terminal, an input terminal, and an output terminal of the ninth switch transistor 801.
  • the second controller 802 can be a microcontroller or a pulse width modulator.
  • the buck processing can be realized under the condition of high input voltage to output the direct current corresponding to the load working voltage range, so
  • the non-isolated regulated current sharing circuit provided by the embodiment can be applied to both low input voltage (such as 48V low voltage) and high input voltage (such as 400V high voltage) application scenarios.
  • the non-isolated voltage-stabilizing current sharing circuit shown in FIG. 9, FIG. 10, FIG. 11 and FIG. 12, the non-isolated voltage-stabilizing current sharing circuit provided in this embodiment is as shown in FIG. 14, FIG. 15, FIG. 16 and FIG.
  • the buck unit 800 further has a buck control terminal, and the buck control terminal of the buck unit 800 is connected to the first controller 100.
  • the buck unit 800 includes a tenth switch 803, an eighth inductor L8, a second diode D12, and a second capacitor C12.
  • the input end of the tenth switch 803 is the input end of the buck unit 800, the output end of the tenth switch 803 and the cathode of the second diode D12 are connected to the first end of the eighth inductor L8, and the eighth inductor L8
  • the common junction of the second end and the first end of the second capacitor C12 is the output end of the buck unit 800, and the common junction of the anode of the second diode D12 and the second end of the second capacitor C12 is the buck unit 800
  • the controlled end of the tenth switch 803 is the buck control terminal of the buck unit 800.
  • the tenth switch tube 803, the eighth inductor L8, the second diode D12, and the second capacitor C12 constitute a buck buck circuit, and the buck buck circuit inputs the input end of the tenth switch tube 803.
  • the DC power is stepped down and output to the load, and the step-down ratio is determined by the first controller 100.
  • the first controller 100 outputs a control signal to drive the tenth switch tube 803 to perform the on-off operation according to the corresponding duty ratio, so
  • the switching duty of the ten-switch 803 determines the step-down ratio of the buck buck circuit.
  • the tenth switch tube 803 may be a MOS transistor (including an NMOS transistor and a PMOS transistor), an IGBT, or other semiconductor device having a switching characteristic.
  • MOS transistor including an NMOS transistor and a PMOS transistor
  • IGBT indium gallium trioxide
  • the gate, the source and the drain of the MOS transistor or the IGBT are respectively the controlled end, the input end and the output end of the tenth switch tube 803.
  • the buck processing can be realized under the condition of high input voltage to output the direct current corresponding to the load working voltage range, so
  • the non-isolated regulated current sharing circuit provided by the embodiment can be applied to both low input voltage (such as 48V low voltage) and high input voltage (such as 400V high voltage) application scenarios.
  • the non-isolated voltage-stabilizing current sharing circuit provided in this embodiment further includes a filter capacitor C1.
  • the filter capacitor C1 is connected between the output end and the loop end of the first voltage-stabilizing current sharing unit 200, and the filter capacitor C1 is connected to the first voltage regulator.
  • the DC power output from the current sharing unit 200 performs filtering processing.
  • the filter capacitor C1 is connected between the output end and the loop end of the first voltage-stabilizing current sharing unit 200, and the filter capacitor C1 is connected to the first voltage regulator.
  • the DC power output by the current sharing unit 200 and the second voltage stabilizing current sharing unit 600 performs filtering processing.
  • the filter capacitor C1 is connected between the output end and the loop end of the first voltage-stabilizing current sharing unit 200, and the filter capacitor C1 is connected to the first voltage regulator.
  • the DC power output from the current sharing unit 200 performs filtering processing.
  • the filter capacitor C1 is connected between the output end and the loop end of the first voltage-stabilizing current sharing unit 200, and the filter capacitor C1 is connected to the first voltage regulator.
  • the DC power output by the current sharing unit 200 and the third voltage stabilizing current sharing unit 700 performs filtering processing.
  • the filter capacitor C1 is connected between the output end and the loop end of the first voltage-stabilizing current sharing unit 200, and the filter capacitor C1 is connected to the first voltage regulator.
  • the DC power output from the current sharing unit 200 performs filtering processing.
  • the filter capacitor C1 is connected between the output end and the loop end of the first voltage stabilizing current sharing unit 200, and the filter capacitor C1 is connected to the first voltage regulator.
  • the DC power output by the current sharing unit 200 and the second voltage stabilizing current sharing unit 600 performs filtering processing.
  • the filter capacitor C1 is connected between the output end and the loop end of the first voltage-stabilizing current sharing unit 200, and the filter capacitor C1 is connected to the first voltage regulator.
  • the DC power output from the current sharing unit 200 performs filtering processing.
  • the filter capacitor C1 is connected between the output end and the loop end of the first voltage stabilizing current sharing unit 200, and the filter capacitor C1 is connected to the first voltage regulator.
  • the DC power output by the current sharing unit 200 and the third voltage stabilizing current sharing unit 700 performs filtering processing.
  • the filter capacitor C1 is connected between the output end and the loop end of the first regulated current sharing unit 200, and the filter capacitor C1 is applied to the first voltage regulator.
  • the DC power output from the current sharing unit 200 performs filtering processing.
  • the filter capacitor C1 is connected between the output end and the loop end of the first voltage-stabilizing current sharing unit 200, and the filter capacitor C1 is connected to the first voltage regulator.
  • the DC power output by the current sharing unit 200 and the second voltage stabilizing current sharing unit 600 performs filtering processing.
  • the filter capacitor C1 is connected between the output end and the loop end of the first regulated current sharing unit 200, and the filter capacitor C1 is applied to the first voltage regulator.
  • the DC power output from the current sharing unit 200 performs filtering processing.
  • the filter capacitor C1 is connected between the output end and the loop end of the first voltage stabilizing current sharing unit 200, and the filter capacitor C1 is connected to the first voltage regulator.
  • the DC power output by the current sharing unit 200 and the third voltage stabilizing current sharing unit 700 performs filtering processing.
  • the non-isolated voltage-stabilizing current sharing circuit provided by the embodiment of the invention can maintain a stable output voltage and output current without being limited by the input voltage difference, thereby improving the power supply efficiency.
  • the utility model comprises an existing plurality of power supply circuits, a current shunt circuit and a plurality of current sharing current circuits, wherein the current shunt circuit shunts the output current of the power supply circuit and outputs the current to the current sharing current circuit, and the current sharing in the current sharing current circuit
  • the circuit module combines any two currents output by the current shunt circuit to output a first direct current Vin+.
  • the power supply system further includes a non-isolated voltage-stabilizing current sharing circuit as shown in FIG. 1 to FIG. 30.
  • the first inductor L1 in the non-isolated voltage-stabilizing current sharing circuit is connected to the first direct current power Vin+ from the current combining module.

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Abstract

La présente invention concerne un circuit de stabilisation de tension et d'équilibrage de courant non isolé et un système d'alimentation électrique. Dans le circuit de stabilisation de tension et d'équilibrage de courant non isolé, une première unité de stabilisation de tension et d'équilibrage de courant (200) fournit du courant continu fourni par une première bobine inductrice (L1) et du courant de ligne fourni par charge (500) à la charge et une seconde bobine inductrice (L2) dans un mode en roue libre respectivement, de sorte que la valeur du courant continu fourni par la seconde bobine inductrice est égale à celle du courant continu injecté dans la première bobine inductrice ; une unité d'échantillonnage de tension (300) et une unité d'échantillonnage de courant (400) sont respectivement utilisées pour échantillonner la tension fournie par la première unité de stabilisation de tension et d'équilibrage de courant et le courant de ligne fourni par la charge, et renvoient un signal d'échantillonnage de tension (VS) et un signal d'échantillonnage de courant (IS) à un premier dispositif de commande (100) ; et le premier dispositif de commande commande la première unité de stabilisation de tension et d'équilibrage de courant pour qu'elle règle la tension de sortie et le courant de sortie du circuit de stabilisation de tension et d'équilibrage de courant non isolé en fonction du signal d'échantillonnage de tension et du signal d'échantillonnage de courant, de sorte qu'une tension de sortie et un courant de sortie constants peuvent être maintenus sans la limite de différence de tension d'entrée et que le rendement d'alimentation électrique est amélioré.
PCT/CN2015/070134 2014-08-20 2015-01-05 Circuit de stabilisation de tension et d'équilibrage de courant non isolé et système d'alimentation électrique Ceased WO2016026260A1 (fr)

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CN107193243A (zh) * 2016-03-15 2017-09-22 上海普锐马电子有限公司 一种用于eut电源的电压电流实时监控系统
CN107509281A (zh) * 2017-09-27 2017-12-22 杭州意博高科电器有限公司 非隔离拓扑实现无线控制rgbw光源的电路
CN108668052A (zh) * 2017-03-31 2018-10-16 深圳市富满电子集团股份有限公司 一种滤镜切换芯片、摄像机的滤镜切换电路及监控设备
CN108964432A (zh) * 2018-07-26 2018-12-07 深圳市蓝德汽车电源技术有限公司 一种燃料电池汽车的dcdc电流控制电路
CN109521828A (zh) * 2018-12-29 2019-03-26 惠州华科电器有限公司 线性稳压电路
CN110176946A (zh) * 2019-01-30 2019-08-27 深圳市晟瑞科技有限公司 一种中继放大装置及中继放大器
CN113125839A (zh) * 2021-04-26 2021-07-16 深圳市合广测控技术有限公司 非隔离电压采样电路、电压采样系统和电量计量装置
CN118677081A (zh) * 2024-05-20 2024-09-20 漳州科华技术有限责任公司 储能系统的并机均流方法、装置及储能系统

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CN108314146B (zh) * 2018-01-26 2024-01-05 深圳安吉尔饮水产业集团有限公司 一种倒极控制电路和净水器
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CN107193243A (zh) * 2016-03-15 2017-09-22 上海普锐马电子有限公司 一种用于eut电源的电压电流实时监控系统
CN108668052A (zh) * 2017-03-31 2018-10-16 深圳市富满电子集团股份有限公司 一种滤镜切换芯片、摄像机的滤镜切换电路及监控设备
CN108668052B (zh) * 2017-03-31 2024-02-13 富满微电子集团股份有限公司 一种滤镜切换芯片、摄像机的滤镜切换电路及监控设备
CN107509281A (zh) * 2017-09-27 2017-12-22 杭州意博高科电器有限公司 非隔离拓扑实现无线控制rgbw光源的电路
CN107509281B (zh) * 2017-09-27 2023-12-08 浙江意博高科技术有限公司 非隔离拓扑实现无线控制rgbw光源的电路
CN108964432A (zh) * 2018-07-26 2018-12-07 深圳市蓝德汽车电源技术有限公司 一种燃料电池汽车的dcdc电流控制电路
CN108964432B (zh) * 2018-07-26 2023-09-29 深圳市蓝德汽车电源技术有限公司 一种燃料电池汽车的dcdc电流控制电路
CN109521828A (zh) * 2018-12-29 2019-03-26 惠州华科电器有限公司 线性稳压电路
CN110176946A (zh) * 2019-01-30 2019-08-27 深圳市晟瑞科技有限公司 一种中继放大装置及中继放大器
CN113125839A (zh) * 2021-04-26 2021-07-16 深圳市合广测控技术有限公司 非隔离电压采样电路、电压采样系统和电量计量装置
CN118677081A (zh) * 2024-05-20 2024-09-20 漳州科华技术有限责任公司 储能系统的并机均流方法、装置及储能系统

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