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WO2020153603A1 - Led converter using solid capacitor - Google Patents

Led converter using solid capacitor Download PDF

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Publication number
WO2020153603A1
WO2020153603A1 PCT/KR2019/017617 KR2019017617W WO2020153603A1 WO 2020153603 A1 WO2020153603 A1 WO 2020153603A1 KR 2019017617 W KR2019017617 W KR 2019017617W WO 2020153603 A1 WO2020153603 A1 WO 2020153603A1
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Prior art keywords
voltage
output
unit
rectifying
circuit unit
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French (fr)
Korean (ko)
Inventor
배철희
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Kumho E&g Co Ltd
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Kumho E&g Co Ltd
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    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from DC input or output
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Definitions

  • the present invention relates to an LED converter. More specifically, it relates to an LED converter using a solid capacitor to replace the electrolytic capacitor with a solid capacitor.
  • the LED Light Emitting Diode
  • the LED is a semiconductor device that emits light, which is small, has a long life, and has excellent energy-saving effects, and thus various lighting devices using it are actively being developed.
  • the LED lighting device of the prior art is provided with a converter that converts AC power into DC power so that it can be applied to a general lighting system using AC power.
  • a capacitor serves as a smoothing circuit.
  • capacitors there are various types of capacitors, such as electrolytic capacitors, tantalum capacitors, ceramic capacitors, and Mylar capacitors.
  • electrolytic capacitors can be manufactured at a low cost and have a large capacity, so they are mainly used as components of converters.
  • Electrolytic capacitors have the disadvantage that they are vulnerable to life due to the nature of the converter that generates heat because it uses electrolyte. Therefore, the conventional LED lighting device has a problem that, despite the use of an LED element having a semi-permanent life, it can only guarantee a lifetime of about 30,000 to 50,000 hours due to the electrolytic capacitor.
  • the solid capacitor is difficult to make the breakdown voltage more than 50V, and due to the nature, there is a possibility of damage due to the breakdown voltage, which makes the circuit configuration difficult.
  • An object of the present invention is to provide an LED converter using a solid capacitor to easily protect a solid capacitor having a low breakdown voltage and capacity through a protection circuit in replacing the electrolytic capacitor with a solid capacitor.
  • An LED converter using a solid capacitor includes a first rectifying unit that rectifies an input AC voltage and converts it into a first DC voltage to output it;
  • a PWM generator configured to pulse-modulate the converted first DC voltage to output a first AC voltage
  • a transformer for converting and outputting the first AC voltage into a second AC voltage
  • a second rectifying unit rectifying the second AC voltage output from the transformer unit
  • a smoothing circuit unit formed by connecting a plurality of solid capacitors in parallel and smoothing a second AC voltage, which is an output voltage of the second rectifying unit, to output a second DC voltage;
  • a fixed current circuit unit providing a fixed current according to the second DC voltage output from the smoothing circuit unit
  • a detection circuit unit that detects a current value output from the fixed current circuit unit and outputs it as a feedback signal
  • a control unit receiving the feedback signal and controlling the PWM generator
  • a TVS circuit unit connected in parallel to the second rectifying unit to protect the solid capacitor of the smoothing circuit unit to suppress a transient voltage and output a constant current of 50 V or less;
  • the LED converter using a solid capacitor comprises: a first rectifying unit that rectifies an input AC voltage and converts it into a first DC voltage to output it;
  • a PWM generator configured to pulse-modulate the converted first DC voltage to output a first AC voltage
  • a transformer for converting and outputting the first AC voltage into a second AC voltage
  • a second rectifying unit rectifying the second AC voltage output from the transformer unit
  • a smoothing circuit unit formed by connecting a plurality of solid capacitors in parallel and smoothing a second AC voltage, which is an output voltage of the second rectifying unit, to output a second DC voltage;
  • a fixed current circuit unit providing a fixed current according to the second DC voltage output from the smoothing circuit unit
  • a detection circuit unit that detects a current value output from the fixed current circuit unit and outputs it as a feedback signal
  • a control unit receiving the feedback signal and controlling the PWM generator
  • a TVS circuit unit connected in parallel to the second rectifying unit to protect the solid capacitor of the smoothing circuit unit to suppress a transient voltage and output a constant current of 50 V or less;
  • Each of the second rectifiers may be connected in series to the respective solid capacitors, and the TVS circuits may be connected to the diodes of each of the second rectifiers in parallel.
  • the cost is higher than that of the electrolytic capacitor, and the effect of properly protecting the solid capacitor of a low breakdown voltage and capacity There is.
  • FIG. 1 is a view schematically showing the configuration of an LED converter using a solid capacitor according to a first embodiment of the present invention.
  • FIG. 2 is a view showing a circuit connection relationship of the solid capacitor, the second rectifying unit, and the TVS circuit unit according to the first embodiment of the present invention.
  • FIG 3 is a view schematically showing the configuration of an LED converter using a solid capacitor according to a second embodiment of the present invention.
  • FIG. 4 is a view schematically showing the configuration of an LED converter using a solid capacitor according to a third embodiment of the present invention.
  • FIG. 5 is a view showing a circuit connection relationship between a solid capacitor, a second rectifier, and a TVS circuit according to a second embodiment of the present invention.
  • FIG. 6 is a view showing a circuit connection relationship between a solid capacitor, a second rectifier, and a TVS circuit according to a third embodiment of the present invention.
  • FIG. 7 is a view showing a circuit connection relationship between a solid capacitor, a second rectifier, and a TVS circuit according to a fourth embodiment of the present invention.
  • first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term.
  • FIG. 1 is a diagram schematically showing the configuration of an LED converter using a solid capacitor according to a first embodiment of the present invention
  • FIG. 2 is a circuit of a solid capacitor, a second rectifier, and a TVS circuit according to the first embodiment of the present invention It is a diagram showing the connection relationship.
  • the LED converter using the solid capacitor according to the first embodiment of the present invention includes a first rectifying unit 110, a PWM generating unit 120, a transformer unit 130, a second rectifying unit 140, a smoothing circuit unit 150, fixed It includes a current circuit unit 160, a detection circuit unit 170, a control unit 180, a TVS circuit unit 190 and a surge circuit unit 200.
  • the first rectifying unit 110 rectifies the input AC voltage provided from the power supply to convert and output the first DC voltage, and a bridge rectifier or the like can be applied.
  • the PWM generator 120 outputs the first DC voltage converted and output from the first rectifying unit 110 as a first AC voltage by pulse width modulation (PWM).
  • PWM pulse width modulation
  • the transformer 130 converts and outputs a first AC voltage, which is a pulse width modulated voltage output from the PWM generator 120, to a second AC voltage.
  • the second rectifying unit 140 rectifies the second AC voltage converted and output from the transformer 130 through a diode.
  • the smoothing circuit unit 150 is formed by connecting a plurality of solid capacitors in parallel, and smoothing the second AC voltage to output the second DC voltage.
  • the solid-state capacitor smoothes the output voltage of the second rectifying unit 140 and is charged with the second DC voltage to supply the driving power of the LED lighting device.
  • the fixed current circuit unit 160 provides a fixed current according to the second DC voltage output from the smoothing circuit unit 150 to an external load.
  • the detection circuit unit 170 detects a current value output from the fixed current circuit unit 160 and outputs a feedback signal to the control unit 180.
  • the controller 180 receives the feedback signal to control the PWM generator 120.
  • the TVS circuit unit 190 is a protection circuit for protecting the solid capacitor of the smoothing circuit unit 150 and is connected in parallel to the second rectifying unit 140 to suppress the transient voltage.
  • the TVS circuit unit 190 is configured to connect a TVS diode in parallel to the second rectifying unit 140 in order to protect a solid capacitor having a higher cost compared to an electrolytic capacitor and a low breakdown voltage (up to 50V) and a capacity (220 kW or less).
  • TVS diodes have fast response time (ns level) and high surge current absorption capability, making them suitable for immediate circuit protection against transient voltage spikes.
  • Solid capacitors manufactured at the current technology level have a maximum internal pressure of 50 V and a capacity of 220 MPa or less. Therefore, the LED converter of the present invention is configured so that the maximum output is within 50 V, but is formed by connecting a solid capacitor in parallel to increase capacity.
  • the smoothing circuit unit 150 configures the maximum output to be within 50 V, and configures the number of solid capacitors in parallel to increase capacity corresponding to the capacity of the electrolytic capacitor. .
  • the electrolytic capacitor when replacing the electrolytic capacitor with a solid capacitor, it is configured to replace the electrolytic capacitor 1000 ⁇ F, 50V with a plurality of solid capacitors 220 ⁇ F, 50V. That is, 4 to 5 solid capacitors 220 ⁇ F and 50 V are configured in parallel.
  • the surge circuit unit 200 is connected in parallel to a power supply that transmits an alternating voltage to the first rectifying unit 110 so as to protect it from surge, and a varistor device, which is a device that significantly lowers resistance when a high voltage is applied Adopt and configure.
  • the surge circuit unit 200 removes noise of an AC voltage supplied from a power supply and provides it to the first rectifying unit 110, and selectively configures an electromagnetic interference filter (EMI filter) to remove high-frequency noise of the AC voltage.
  • EMI filter electromagnetic interference filter
  • the LED converter rectifies AC 220V at the rectifying unit, converts it to DC 310V, converts it to a PWM waveform through the transformer 130, and then outputs a constant current of 50V or less through a smoothing circuit using a solid capacitor.
  • FIG 3 is a view schematically showing the configuration of an LED converter using a solid capacitor according to a second embodiment of the present invention.
  • the LED converter of the second embodiment of the present invention may be configured as a non-isolated converter, the first rectifier 110, the PWM generator 120, the transformer 130, the first 2
  • the rectifying part 140, the smoothing circuit part 150, the fixed current circuit part 160, the detection circuit part 170, the control part 180, the TVS circuit part 190, and the surge circuit part 200 are analog grounded (Ground, GND). .
  • FIG. 5 is a view showing a circuit connection relationship between a solid capacitor, a second rectifier, and a TVS circuit according to a second embodiment of the present invention.
  • the smoothing circuit unit 150 constitutes a plurality of solid capacitors in parallel.
  • the second rectifier 140 is connected to each of the solid capacitors in series, and the TVS circuit 190 is connected to the diodes of the second rectifier 140 in parallel, respectively.
  • FIG. 4 is a view schematically showing the configuration of an LED converter using a solid capacitor according to a third embodiment of the present invention.
  • the LED converter of the third embodiment of the present invention may be configured as an insulated converter, the first rectifier 110, the PWM generator 120, the detection circuit 170, the controller ( 180), the surge circuit unit 200 is analog ground (Ground, GND), the second rectifying unit 140, the smoothing circuit unit 150, the fixed current circuit unit 160 and the TVS circuit unit 190 is digitally grounded.
  • FIG. 6 is a view showing a circuit connection relationship between a solid capacitor, a second rectifier, and a TVS circuit according to a third embodiment of the present invention.
  • the TVS circuit unit 190 includes a first TVS diode 190a and a second TVS diode 190b.
  • the first resistor 212 and the first diode 210 are connected in series
  • the second resistor 222 and the second diode 220 are connected in series
  • the first TVS diode 190a and the 2 TVS diodes 190b are connected in series.
  • connection point between the first TVS diode 190a and the second TVS diode 190b and the connection point of the first diode 210 and the second resistor 222 are connected to each other.
  • the first TVS diode 190a and the second TVS diode 190b are connected to the capacitor 230 in parallel, and the first resistor 212, the first diode 210, the second resistor 222, and the second diode 220 is connected to the capacitor 230 in parallel.
  • the first TVS diode 190a and the second TVS diode 190b apply the same resistance value by the first resistor 212, the first diode 210, the second resistor 222, and the second diode 220.
  • the voltage to be made becomes uniform.
  • the capacitor 230 charges the output voltage of the second rectifying unit 140 and then slowly discharges the first resistor 210 and the second resistor 220 to absorb and remove the rapidly changing transient voltage within a short time. That is, the first TVS diode 190a and the second TVS diode 190b are protection circuits for protecting the solid capacitor and suppress the transient voltage, and the applied voltage becomes uniform, so that higher voltage is applied to only one TVS diode. By preventing, each TVS diode can operate stably within the range of the rated voltage.
  • FIG. 7 is a view showing a circuit connection relationship between a solid capacitor, a second rectifier, and a TVS circuit according to a fourth embodiment of the present invention.
  • the first resistor 240 and the first capacitor 250 are connected in series with each other, and the second resistor 260 and the second capacitor 270 are connected in series with each other.
  • connection point of the first TVS diode 190a and the second TVS diode 190b, the connection point of the first capacitor 250 and the second resistor 260, and the first TVS diode 190a and the second TVS diode 190b ) Are connected to each other.
  • the first capacitor 250 and the second capacitor 270 are charged by the first resistor 240 and the second resistor 260, and the charging voltage of the first capacitor 250 and the second capacitor 270 is zero.
  • a constant voltage may be maintained by the 1 TVS diode 190a and the 2nd TVS diode 190b.
  • the magnitude of the signal voltage generated at the input terminal is equal to or less than the charging voltage at the first capacitor 250 and the second capacitor 270, the magnitude of the signal voltage generated at the input terminal does not pass to the output terminal. That is, the LED converter does not output the input signal with a constant current below the desired DC voltage.
  • the leakage current is absorbed to the ground terminal, and the first capacitor 250 and the second capacitor 270 are absorbed. To discharge the constant voltage of the charging voltage and the surge voltage on the circuit.
  • the first TVS diode 190a and the second TVS diode 190b smooth the pulsating voltage rectified by the second rectifier 140 and the third rectifier 142.
  • the present invention has been described in detail through one embodiment, but this is for specifically describing the present invention, and the LED converter using the solid capacitor according to the present invention is not limited thereto.
  • the terms “include”, “consist”, or “have” as described above mean that the corresponding component can be inherent unless specifically stated to the contrary, excluding other components However, it should be interpreted as being able to further include other components, and all terms, including technical or scientific terms, are generally understood by those skilled in the art to which the present invention pertains, unless otherwise defined. It has the same meaning as being.
  • the present invention replaces the electrolytic capacitor with a solid capacitor, and has a protection circuit for protecting the solid capacitor having a low breakdown voltage and capacity, it is possible to provide a stable LED converter with long life and strong durability against ambient conditions. There is industrial availability.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The present invention relates to an LED converter using a solid capacitor. The LED converter using a solid capacitor, according to one embodiment of the present invention, replaces an electrolytic capacitor with a solid capacitor and comprises a protection circuit for protecting the solid capacitor having characteristics of a low withstand voltage and a low capacity, so as provide an LED converter, which has robust durability and is stable with respect to surrounding conditions while having a long lifespan, thereby extending the lifespan of a lighting device.

Description

고체콘덴서를 이용한 LED 컨버터LED converter using solid capacitor

본 발명은 LED 컨버터에 관한 것이다. 더욱 상세하게는 전해콘덴서를 고체콘덴서로 대체하기 위한 고체콘덴서를 이용한 LED 컨버터에 관한 것이다.The present invention relates to an LED converter. More specifically, it relates to an LED converter using a solid capacitor to replace the electrolytic capacitor with a solid capacitor.

일반적으로 LED(Light Emitting Diode)는 빛을 발하는 반도체 소자로 소형이고, 수명이 길며, 에너지 절감효과가 뛰어나기 때문에 이를 이용한 다양한 조명 장치의 개발이 활발하게 이루어지고 있다.In general, the LED (Light Emitting Diode) is a semiconductor device that emits light, which is small, has a long life, and has excellent energy-saving effects, and thus various lighting devices using it are actively being developed.

종래기술의 LED 조명 장치는 교류 전원을 직류 전원으로 바꾸는 컨버터를 구비하여 교류 전원을 이용하는 일반 조명 시스템에 적용할 수 있도록 하고 있다.The LED lighting device of the prior art is provided with a converter that converts AC power into DC power so that it can be applied to a general lighting system using AC power.

이러한 종래기술의 LED 조명 장치는 정류회로를 통해 교류 전원을 직류 전원으로 바꾸는 과정에서 교류 전원의 사인파로 인한 전압 변동을 평활시켜주는 평활 회로의 역할이 중요하다. 이러한 평활 회로의 역할을 하는 것이 콘덴서이다.In the LED lighting device of the related art, a role of a smoothing circuit that smoothes voltage fluctuations caused by a sine wave of an AC power in the process of converting AC power to DC power through a rectifying circuit is important. A capacitor serves as a smoothing circuit.

콘덴서의 종류에는 전해콘덴서, 탄탈 콘덴서, 세라믹 콘덴서, 마일러 콘덴서 등 여러 가지가 있으며, 이 중 전해콘덴서는 낮은 원가 비용으로 소형 제작이 가능하면서 대용량을 갖기 때문에 컨버터의 구성부품으로 주로 사용되고 있다.There are various types of capacitors, such as electrolytic capacitors, tantalum capacitors, ceramic capacitors, and Mylar capacitors. Among them, electrolytic capacitors can be manufactured at a low cost and have a large capacity, so they are mainly used as components of converters.

전해콘덴서는 전해액을 사용하기 때문에 열이 발생하는 컨버터의 특성상 수명에 취약하다는 단점을 가진다. 따라서, 종래의 LED 조명 장치는 반영구적인 수명을 갖는 LED 소자를 사용함에도 불구하고, 전해콘덴서로 인하여 약 3만 내지 5만 시간 정도의 수명밖에 보증할 수 없다는 문제점을 갖게 된다.Electrolytic capacitors have the disadvantage that they are vulnerable to life due to the nature of the converter that generates heat because it uses electrolyte. Therefore, the conventional LED lighting device has a problem that, despite the use of an LED element having a semi-permanent life, it can only guarantee a lifetime of about 30,000 to 50,000 hours due to the electrolytic capacitor.

이러한 문제점을 해결하기 위하여 LED 조명 장치는 평활 회로에 대용량의 전해콘덴서가 사용하는 대신에 사용 주변 조건에 대해 내구성이 강한 고체콘덴서를 사용하는 방식이 새롭게 제안되었다(대한민국 공개특허번호 제10-2013-0080265호).In order to solve this problem, instead of using a large-capacity electrolytic capacitor in a smooth circuit, a method of using a solid-state capacitor having high durability against ambient conditions has been newly proposed (Republic of Korea Patent Publication No. 10-2013-). 0080265).

그러나 LED 조명 장치에서 대용량의 전해콘덴서를 고체콘덴서로 대체하게 되면, 평균 무고장 시간이 증가하나, 출력되는 전압의 파형이 평활을 이루지 못하고 유동성이 생기므로 전원 공급장치인 컨버터로 사용할 수 없게 된다.However, when a large-capacity electrolytic capacitor is replaced with a solid capacitor in an LED lighting device, the average failure time increases, but since the waveform of the output voltage does not achieve smoothness and fluidity, it cannot be used as a power supply converter.

또한, 고체콘덴서는 내압이 50V 이상으로 만들기 어렵고, 특성상 내압으로 인해 손상될 가능성이 있어 회로 구성에 어려움이 있다.In addition, the solid capacitor is difficult to make the breakdown voltage more than 50V, and due to the nature, there is a possibility of damage due to the breakdown voltage, which makes the circuit configuration difficult.

본 발명의 목적은 전해콘덴서를 고체콘덴서로 대체하는 데 있어 보호 회로를 통해 내압 및 용량이 낮은 특성이 있는 고체콘덴서를 용이하게 보호할 수 있도록 한 고체콘덴서를 이용한 LED 컨버터를 제공하는 데 있다.An object of the present invention is to provide an LED converter using a solid capacitor to easily protect a solid capacitor having a low breakdown voltage and capacity through a protection circuit in replacing the electrolytic capacitor with a solid capacitor.

상기 과제를 해결하기 위하여,In order to solve the above problem,

본 발명의 일실시 예에 따른 고체콘덴서를 이용한 LED 컨버터는 입력 교류 전압을 정류하여 제1 직류 전압으로 변환하여 출력하는 제1 정류부;An LED converter using a solid capacitor according to an embodiment of the present invention includes a first rectifying unit that rectifies an input AC voltage and converts it into a first DC voltage to output it;

상기 변환된 제1 직류 전압을 펄스폭 변조하여 제1 교류 전압을 출력하는 PWM 발생부;A PWM generator configured to pulse-modulate the converted first DC voltage to output a first AC voltage;

상기 제1 교류 전압을 제2 교류 전압으로 변환하여 출력하는 변압부;A transformer for converting and outputting the first AC voltage into a second AC voltage;

상기 변압부로부터 출력된 상기 제2 교류 전압을 정류하는 제2 정류부;A second rectifying unit rectifying the second AC voltage output from the transformer unit;

복수의 고체콘덴서를 병렬로 연결되어 형성하고, 상기 제2 정류부의 출력 전압인 제2 교류 전압을 평활시켜 제2 직류 전압으로 출력하는 평활 회로부;A smoothing circuit unit formed by connecting a plurality of solid capacitors in parallel and smoothing a second AC voltage, which is an output voltage of the second rectifying unit, to output a second DC voltage;

상기 평활 회로부로부터 출력되는 상기 제2 직류 전압에 따른 고정 전류를 제공하는 고정 전류 회로부;A fixed current circuit unit providing a fixed current according to the second DC voltage output from the smoothing circuit unit;

상기 고정 전류 회로부로부터 출력되는 전류값을 검출하여 피드백 신호로 출력하는 검출 회로부;A detection circuit unit that detects a current value output from the fixed current circuit unit and outputs it as a feedback signal;

상기 피드백 신호를 전달받아 상기 PWM 발생부를 제어하는 제어부; 및A control unit receiving the feedback signal and controlling the PWM generator; And

상기 평활 회로부의 고체콘덴서를 보호하기 위하여 상기 제2 정류부에 병렬로 연결되어 과도 전압을 억제하여 최대 출력 50V 이하 정전류로 출력되도록 하는 TVS 회로부;A TVS circuit unit connected in parallel to the second rectifying unit to protect the solid capacitor of the smoothing circuit unit to suppress a transient voltage and output a constant current of 50 V or less;

를 포함할 수 있다.It may include.

또한, 본 발명의 일실시 예에 따른 고체콘덴서를 이용한 LED 컨버터는 입력 교류 전압을 정류하여 제1 직류 전압으로 변환하여 출력하는 제1 정류부;In addition, the LED converter using a solid capacitor according to an embodiment of the present invention comprises: a first rectifying unit that rectifies an input AC voltage and converts it into a first DC voltage to output it;

상기 변환된 제1 직류 전압을 펄스폭 변조하여 제1 교류 전압을 출력하는 PWM 발생부;A PWM generator configured to pulse-modulate the converted first DC voltage to output a first AC voltage;

상기 제1 교류 전압을 제2 교류 전압으로 변환하여 출력하는 변압부;A transformer for converting and outputting the first AC voltage into a second AC voltage;

상기 변압부로부터 출력된 상기 제2 교류 전압을 정류하는 제2 정류부;A second rectifying unit rectifying the second AC voltage output from the transformer unit;

복수의 고체콘덴서를 병렬로 연결되어 형성하고, 상기 제2 정류부의 출력 전압인 제2 교류 전압을 평활시켜 제2 직류 전압으로 출력하는 평활 회로부;A smoothing circuit unit formed by connecting a plurality of solid capacitors in parallel and smoothing a second AC voltage, which is an output voltage of the second rectifying unit, to output a second DC voltage;

상기 평활 회로부로부터 출력되는 상기 제2 직류 전압에 따른 고정 전류를 제공하는 고정 전류 회로부;A fixed current circuit unit providing a fixed current according to the second DC voltage output from the smoothing circuit unit;

상기 고정 전류 회로부로부터 출력되는 전류값을 검출하여 피드백 신호로 출력하는 검출 회로부;A detection circuit unit that detects a current value output from the fixed current circuit unit and outputs it as a feedback signal;

상기 피드백 신호를 전달받아 상기 PWM 발생부를 제어하는 제어부; 및A control unit receiving the feedback signal and controlling the PWM generator; And

상기 평활 회로부의 고체콘덴서를 보호하기 위하여 상기 제2 정류부에 병렬로 연결되어 과도 전압을 억제하여 최대 출력 50V 이하 정전류로 출력되도록 하는 TVS 회로부;A TVS circuit unit connected in parallel to the second rectifying unit to protect the solid capacitor of the smoothing circuit unit to suppress a transient voltage and output a constant current of 50 V or less;

를 포함하며,It includes,

상기 각각의 고체콘덴서에 상기 제2 정류부를 직렬로 각각 접속하고, 상기 각각의 제2 정류부의 다이오드에 상기 TVS 회로부를 병렬로 각각 접속할 수 있다.Each of the second rectifiers may be connected in series to the respective solid capacitors, and the TVS circuits may be connected to the diodes of each of the second rectifiers in parallel.

이러한 해결 수단은 첨부된 도면에 의거한 다음의 발명을 실시하기 위한 구체적인 내용으로부터 더욱 명백해질 것이다.These solutions will become more apparent from the specific details for carrying out the following invention based on the accompanying drawings.

이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이고 사전적인 의미로 해석되어서는 아니 되며, 발명자가 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합되는 의미와 개념으로 해석되어야만 한다.Prior to this, the terms or words used in the specification and claims should not be interpreted in a conventional and lexical sense, and the inventor may appropriately define the concept of terms in order to explain his or her invention in the best way. Based on the principle of being able to be interpreted as meanings and concepts consistent with the technical spirit of the present invention.

본 발명의 일실시 예에 따르면, 수명이 길면서 주변 조건에 대해 내구성이 강해 안정적인 LED 컨버터를 제공함으로써, 조명 장치의 수명을 연장하는 효과가 있다.According to an embodiment of the present invention, by providing a stable LED converter with a long life and strong durability against ambient conditions, there is an effect of extending the life of the lighting device.

또한, 본 발명의 일실시 예에 따르면, 출력 정류 측에 보호 회로를 병렬로 연결하여 과도 전압을 억제하고, 전해콘덴서에 비해 가격이 비싸며, 내압 및 용량이 낮은특성의 고체콘덴서를 적절히 보호하는 효과가 있다.In addition, according to an embodiment of the present invention, by connecting a protection circuit in parallel to the output rectifying side to suppress the transient voltage, the cost is higher than that of the electrolytic capacitor, and the effect of properly protecting the solid capacitor of a low breakdown voltage and capacity There is.

도 1은 본 발명의 제1 실시예에 따른 고체콘덴서를 이용한 LED 컨버터의 구성을 개략적으로 나타낸 도면이다.1 is a view schematically showing the configuration of an LED converter using a solid capacitor according to a first embodiment of the present invention.

도 2는 본 발명의 제1 실시예에 따른 고체콘덴서, 제2 정류부, TVS 회로부의 회로 연결 관계를 나타낸 도면이다.2 is a view showing a circuit connection relationship of the solid capacitor, the second rectifying unit, and the TVS circuit unit according to the first embodiment of the present invention.

도 3은 본 발명의 제2 실시예에 따른 고체콘덴서를 이용한 LED 컨버터의 구성을 개략적으로 나타낸 도면이다.3 is a view schematically showing the configuration of an LED converter using a solid capacitor according to a second embodiment of the present invention.

도 4는 본 발명의 제3 실시예에 따른 고체콘덴서를 이용한 LED 컨버터의 구성을 개략적으로 나타낸 도면이다.4 is a view schematically showing the configuration of an LED converter using a solid capacitor according to a third embodiment of the present invention.

도 5는 본 발명의 제2 실시예에 따른 고체콘덴서, 제2 정류부, TVS 회로부의 회로 연결 관계를 나타낸 도면이다.5 is a view showing a circuit connection relationship between a solid capacitor, a second rectifier, and a TVS circuit according to a second embodiment of the present invention.

도 6은 본 발명의 제3 실시예에 따른 고체콘덴서, 제2 정류부, TVS 회로부의 회로 연결 관계를 나타낸 도면이다.6 is a view showing a circuit connection relationship between a solid capacitor, a second rectifier, and a TVS circuit according to a third embodiment of the present invention.

도 7은 본 발명의 제4 실시예에 따른 고체콘덴서, 제2 정류부, TVS 회로부의 회로 연결 관계를 나타낸 도면이다.7 is a view showing a circuit connection relationship between a solid capacitor, a second rectifier, and a TVS circuit according to a fourth embodiment of the present invention.

본 발명의 특이한 관점, 특정한 기술적 특징들은 첨부된 도면들과 연관되는 이하의 구체적인 내용과 일실시 예로부터 더욱 명백해 질 것이다. 본 명세서에서 각 도면의 구성요소들에 참조 부호를 부가함에 있어, 동일한 구성요소들에 대해서는 비록 다른 도면상에 표시되더라도 가능한 동일한 부호를 가지도록 하고 있음에 유의해야 한다. 또한, 본 발명의 일실시 예를 설명함에 있어, 관련된 공지 구성 또는 기능에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명은 생략한다.The specific aspects and specific technical features of the present invention will become more apparent from the following specific contents and embodiments associated with the accompanying drawings. It should be noted that, in addition to reference numerals to the components of each drawing in the present specification, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing an embodiment of the present invention, when it is determined that a detailed description of related known configurations or functions may obscure the subject matter of the present invention, the detailed description will be omitted.

또한, 본 발명의 구성요소를 설명하는 데 있어서, 제1, 제2, A, B, (a), (b) 등의 용어를 사용할 수 있다. 이러한 용어는 그 구성요소를 다른 구성 요소와 구별하기 위한 것일 뿐, 그 용어에 의해 해당 구성요소의 본질이나 차례 또는 순서 등이 한정되지 않는다. 어떤 구성요소가 다른 구성요소에 "연결", "결합" 또는 "접속"된다고 기재된 경우, 그 구성요소는 그 다른 구성요소에 직접적으로 연결되거나 또는 접속될 수 있지만, 각 구성요소 사이에 또 다른 구성요소가 "연결", "결합" 또는 "접속"될 수도 있다고 이해되어야 할 것이다.In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to the other component, but another component between each component It will be understood that elements may be "connected", "coupled" or "connected".

이하, 본 발명의 일실시 예를 첨부된 도면에 의거하여 구체적으로 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[실시예 1][Example 1]

도 1은 본 발명의 제1 실시예에 따른 고체콘덴서를 이용한 LED 컨버터의 구성을 개략적으로 나타낸 도면이고, 도 2는 본 발명의 제1 실시예에 따른 고체콘덴서, 제2 정류부, TVS 회로부의 회로 연결 관계를 나타낸 도면이다.1 is a diagram schematically showing the configuration of an LED converter using a solid capacitor according to a first embodiment of the present invention, and FIG. 2 is a circuit of a solid capacitor, a second rectifier, and a TVS circuit according to the first embodiment of the present invention It is a diagram showing the connection relationship.

본 발명의 제1 실시예에 따른 고체콘덴서를 이용한 LED 컨버터는 제1 정류부(110), PWM 발생부(120), 변압부(130), 제2 정류부(140), 평활 회로부(150), 고정 전류 회로부(160), 검출 회로부(170), 제어부(180), TVS 회로부(190) 및 서지 회로부(200)를 포함한다.The LED converter using the solid capacitor according to the first embodiment of the present invention includes a first rectifying unit 110, a PWM generating unit 120, a transformer unit 130, a second rectifying unit 140, a smoothing circuit unit 150, fixed It includes a current circuit unit 160, a detection circuit unit 170, a control unit 180, a TVS circuit unit 190 and a surge circuit unit 200.

제1 정류부(110)는 전원 공급원으로부터 제공되는 입력 교류 전압을 정류하여 제1 직류 전압을 변환 출력하며, 브릿지 정류기 등이 적용될 수 있다.The first rectifying unit 110 rectifies the input AC voltage provided from the power supply to convert and output the first DC voltage, and a bridge rectifier or the like can be applied.

PWM 발생부(120)는 상기 제1 정류부(110)로부터 변환 출력된 제1 직류 전압을 펄스폭 변조(Pulse Width Modulation, PWM)하여 제1 교류 전압으로 출력한다.The PWM generator 120 outputs the first DC voltage converted and output from the first rectifying unit 110 as a first AC voltage by pulse width modulation (PWM).

변압부(130)는 상기 PWM 발생부(120)로부터 출력된 펄스폭 변조된 전압인 제1 교류 전압을 제2 교류 전압으로 변환하여 출력한다.The transformer 130 converts and outputs a first AC voltage, which is a pulse width modulated voltage output from the PWM generator 120, to a second AC voltage.

제2 정류부(140)는 상기 변압부(130)로부터 변환 출력된 상기 제2 교류 전압을 다이오드를 통해 정류한다.The second rectifying unit 140 rectifies the second AC voltage converted and output from the transformer 130 through a diode.

평활 회로부(150)는 복수의 고체콘덴서를 병렬로 연결하여 이루어지고, 상기 제2 교류 전압을 평활시켜 제2 직류 전압으로 출력한다.The smoothing circuit unit 150 is formed by connecting a plurality of solid capacitors in parallel, and smoothing the second AC voltage to output the second DC voltage.

고체콘덴서는 제2 정류부(140)의 출력 전압을 평활하고, 제2 직류 전압으로 충전되어 LED 조명 장치의 구동 전원으로 공급하게 된다.The solid-state capacitor smoothes the output voltage of the second rectifying unit 140 and is charged with the second DC voltage to supply the driving power of the LED lighting device.

고정 전류 회로부(160)는 평활 회로부(150)로부터 출력되는 제2 직류 전압에 따른 고정 전류를 외부 부하에 제공한다.The fixed current circuit unit 160 provides a fixed current according to the second DC voltage output from the smoothing circuit unit 150 to an external load.

검출 회로부(170)는 상기 고정 전류 회로부(160)로부터 출력되는 전류값을 검출하여 제어부(180)로 피드백 신호를 출력한다.The detection circuit unit 170 detects a current value output from the fixed current circuit unit 160 and outputs a feedback signal to the control unit 180.

제어부(180)는 상기 피드백 신호를 전송받아 PWM 발생부(120)를 제어하도록 한다.The controller 180 receives the feedback signal to control the PWM generator 120.

TVS 회로부(190)는 평활 회로부(150)의 고체콘덴서를 보호하기 위한 보호 회로이고, 상기 제2 정류부(140)에 병렬로 연결되어 과도 전압을 억제하도록 한다.The TVS circuit unit 190 is a protection circuit for protecting the solid capacitor of the smoothing circuit unit 150 and is connected in parallel to the second rectifying unit 140 to suppress the transient voltage.

TVS 회로부(190)는 전해콘덴서 대비 가격이 비싸며 내압(최대 50V) 및 용량(220㎌ 이하)이 낮은 고체콘덴서를 보호하기 위하여 제2 정류부(140)에 TVS 다이오드를 병렬로 연결하여 구성한다.The TVS circuit unit 190 is configured to connect a TVS diode in parallel to the second rectifying unit 140 in order to protect a solid capacitor having a higher cost compared to an electrolytic capacitor and a low breakdown voltage (up to 50V) and a capacity (220 kW or less).

TVS 다이오드는 빠른 응답 시간(ns 레벨)과 높은 서지 전류 흡수 능력을 가지므로 과도 전압 스파이크에 대한 즉각적인 회로 보호에 적합하다.TVS diodes have fast response time (ns level) and high surge current absorption capability, making them suitable for immediate circuit protection against transient voltage spikes.

TVS 다이오드가 높은 과도 전압을 겪에 되면 다이오드의 저항이 매우 빠르게 변하고, 과도 전류가 흡수되어 예민한 다운 스트림 장치가 보호된다. 이어서, 높은 피크 전압으로 인해 칩이 손상되는 것을 방지하기 위해 전압이 소정값으로 고정되게 된다.When a TVS diode experiences a high transient voltage, the diode's resistance changes very quickly, and the transient current is absorbed, protecting sensitive downstream devices. Subsequently, the voltage is fixed to a predetermined value to prevent the chip from being damaged due to the high peak voltage.

현재 기술 수준으로 제작되는 고체콘덴서는 내압이 최대 50V이고 용량 220㎌ 이하이다. 따라서, 본 발명의 LED 컨버터는 최대 출력이 50V 이내가 되도록 구성하되 용량 증가를 위하여 고체콘덴서를 병렬로 연결하여 형성한다.Solid capacitors manufactured at the current technology level have a maximum internal pressure of 50 V and a capacity of 220 MPa or less. Therefore, the LED converter of the present invention is configured so that the maximum output is within 50 V, but is formed by connecting a solid capacitor in parallel to increase capacity.

평활 회로부(150)는 전해콘덴서를 상기 복수의 고체콘덴서로 대체하는 경우, 최대 출력이 50V 이내가 되도록 구성하고, 용량 증가를 상기 전해콘덴서의 용량에 대응하도록 상기 고체콘덴서의 개수를 병렬로 구성한다.When the electrolytic capacitor 150 is replaced with the plurality of solid capacitors, the smoothing circuit unit 150 configures the maximum output to be within 50 V, and configures the number of solid capacitors in parallel to increase capacity corresponding to the capacity of the electrolytic capacitor. .

즉, 전해콘덴서를 고체콘덴서로 대체하는 경우, 전해콘덴서 1000㎌, 50V를 복수의 고체콘덴서 220㎌, 50V로 대체하여 구성하게 된다. 즉 4개 내지 5개의 고체콘덴서 220㎌, 50V를 병렬로 구성하게 된다.That is, when replacing the electrolytic capacitor with a solid capacitor, it is configured to replace the electrolytic capacitor 1000㎌, 50V with a plurality of solid capacitors 220㎌, 50V. That is, 4 to 5 solid capacitors 220 ㎌ and 50 V are configured in parallel.

서지 회로부(200)는 제1 정류부(110) 측으로 교류 전압을 전송하는 전원 공급원에 병렬로 연결되어 서지(Surge)로부터 보호하도록 하며, 높은 전압이 걸리면 저항이 현저히 낮아지는 소자인 바리스터(Varistor) 소자를 채택하여 구성한다.The surge circuit unit 200 is connected in parallel to a power supply that transmits an alternating voltage to the first rectifying unit 110 so as to protect it from surge, and a varistor device, which is a device that significantly lowers resistance when a high voltage is applied Adopt and configure.

서지 회로부(200)는 전원 공급원으로부터 공급되는 교류 전압의 노이즈를 제거하여 제1 정류부(110)로 제공하게 되고, 교류 전압의 고주파 노이즈를 제거하는 EMI 필터(Electromagnetic Interference Filter) 등을 선택적으로 구성할 수 있다.The surge circuit unit 200 removes noise of an AC voltage supplied from a power supply and provides it to the first rectifying unit 110, and selectively configures an electromagnetic interference filter (EMI filter) to remove high-frequency noise of the AC voltage. Can.

LED 컨버터는 정류부에서 AC 220V를 정류하여 DC 310V로 변환되고, 이를 변압부(130)를 거쳐 PWM 파형으로 변환한 후 고체콘덴서를 이용한 평활 회로를 거쳐서 최대 출력 50V 이하 정전류로 출력한다.The LED converter rectifies AC 220V at the rectifying unit, converts it to DC 310V, converts it to a PWM waveform through the transformer 130, and then outputs a constant current of 50V or less through a smoothing circuit using a solid capacitor.

[실시예 2][Example 2]

도 3은 본 발명의 제2 실시예에 따른 고체콘덴서를 이용한 LED 컨버터의 구성을 개략적으로 나타낸 도면이다.3 is a view schematically showing the configuration of an LED converter using a solid capacitor according to a second embodiment of the present invention.

도 3에 도시된 바와 같이, 본 발명의 제2 실시예의 LED 컨버터는 비절연 방식의 컨버터로 구성될 수 있으며, 제1 정류부(110), PWM 발생부(120), 변압부(130), 제2 정류부(140), 평활 회로부(150), 고정 전류 회로부(160), 검출 회로부(170), 제어부(180), TVS 회로부(190), 서지 회로부(200)를 아날로그 접지(Ground, GND) 된다.As shown in Figure 3, the LED converter of the second embodiment of the present invention may be configured as a non-isolated converter, the first rectifier 110, the PWM generator 120, the transformer 130, the first 2 The rectifying part 140, the smoothing circuit part 150, the fixed current circuit part 160, the detection circuit part 170, the control part 180, the TVS circuit part 190, and the surge circuit part 200 are analog grounded (Ground, GND). .

도 5는 본 발명의 제2 실시예에 따른 고체콘덴서, 제2 정류부, TVS 회로부의 회로 연결 관계를 나타낸 도면이다.5 is a view showing a circuit connection relationship between a solid capacitor, a second rectifier, and a TVS circuit according to a second embodiment of the present invention.

평활 회로부(150)는 복수의 고체콘덴서를 병렬로 구성하고 있다.The smoothing circuit unit 150 constitutes a plurality of solid capacitors in parallel.

각각의 고체콘덴서에 제2 정류부(140)를 직렬로 각각 접속하고, 상기 각각의 제2 정류부(140)의 다이오드에 TVS 회로부(190)를 병렬로 각각 접속한다.The second rectifier 140 is connected to each of the solid capacitors in series, and the TVS circuit 190 is connected to the diodes of the second rectifier 140 in parallel, respectively.

[실시예 3][Example 3]

도 4는 본 발명의 제3 실시예에 따른 고체콘덴서를 이용한 LED 컨버터의 구성을 개략적으로 나타낸 도면이다.4 is a view schematically showing the configuration of an LED converter using a solid capacitor according to a third embodiment of the present invention.

도 4에 도시된 바와 같이, 본 발명의 제3 실시예의 LED 컨버터는 절연 방식의 컨버터로 구성될 수 있으며, 제1 정류부(110), PWM 발생부(120), 검출 회로부(170), 제어부(180), 서지 회로부(200)를 아날로그 접지(Ground, GND)되며, 제2 정류부(140), 평활 회로부(150), 고정 전류 회로부(160) 및 TVS 회로부(190)를 디지털 접지된다.4, the LED converter of the third embodiment of the present invention may be configured as an insulated converter, the first rectifier 110, the PWM generator 120, the detection circuit 170, the controller ( 180), the surge circuit unit 200 is analog ground (Ground, GND), the second rectifying unit 140, the smoothing circuit unit 150, the fixed current circuit unit 160 and the TVS circuit unit 190 is digitally grounded.

도 6은 본 발명의 제3 실시예에 따른 고체콘덴서, 제2 정류부, TVS 회로부의 회로 연결 관계를 나타낸 도면이다.6 is a view showing a circuit connection relationship between a solid capacitor, a second rectifier, and a TVS circuit according to a third embodiment of the present invention.

도 6에 도시된 바와 같이, TVS 회로부(190)는 제1 TVS 다이오드(190a)와 제2 TVS 다이오드(190b)로 구성한다.As illustrated in FIG. 6, the TVS circuit unit 190 includes a first TVS diode 190a and a second TVS diode 190b.

제3 실시예는 제1 저항(212)과 제1 다이오드(210)가 직렬 연결되고, 제2 저항(222)과 제2 다이오드(220)가 직렬 연결되며, 제1 TVS 다이오드(190a)와 제2 TVS 다이오드(190b)가 직렬 연결된다.In the third embodiment, the first resistor 212 and the first diode 210 are connected in series, the second resistor 222 and the second diode 220 are connected in series, and the first TVS diode 190a and the 2 TVS diodes 190b are connected in series.

제1 TVS 다이오드(190a)와 제2 TVS 다이오드(190b)의 사이의 접속점과 제1 다이오드(210)와 제2 저항(222)의 접속점을 서로 연결한다.The connection point between the first TVS diode 190a and the second TVS diode 190b and the connection point of the first diode 210 and the second resistor 222 are connected to each other.

제1 TVS 다이오드(190a)와 제2 TVS 다이오드(190b)는 콘덴서(230)에 병렬로 접속하며, 제1 저항(212), 제1 다이오드(210), 제2 저항(222) 및 제2 다이오드(220)는 콘덴서(230)에 병렬로 접속한다.The first TVS diode 190a and the second TVS diode 190b are connected to the capacitor 230 in parallel, and the first resistor 212, the first diode 210, the second resistor 222, and the second diode 220 is connected to the capacitor 230 in parallel.

제1 TVS 다이오드(190a)와 제2 TVS 다이오드(190b)는 동일한 저항값을 제1 저항(212), 제1 다이오드(210)과 제2 저항(222), 제2 다이오드(220)에 의해서 인가되는 전압이 균일하게 된다.The first TVS diode 190a and the second TVS diode 190b apply the same resistance value by the first resistor 212, the first diode 210, the second resistor 222, and the second diode 220. The voltage to be made becomes uniform.

콘덴서(230)는 제2 정류부(140)의 출력 전압을 충전시킨 후, 제1 저항(210)과 제2 저항(220)에서 서서히 방전시켜 단시간 내에 급격히 변화하는 과도 전압을 흡수하여 제거시킨다. 즉, 제1 TVS 다이오드(190a)와 제2 TVS 다이오드(190b)는 고체콘덴서를 보호하기 위한 보호 회로로 과도 전압을 억제하고, 걸리는 전압이 균일하게 되어 한쪽 TVS 다이오드에만 더 높은 전압이 인가되는 것을 방지하여 각 TVS 다이오드가 정격 전압의 범위 내에서 안정적인 동작을 할 수 있다.The capacitor 230 charges the output voltage of the second rectifying unit 140 and then slowly discharges the first resistor 210 and the second resistor 220 to absorb and remove the rapidly changing transient voltage within a short time. That is, the first TVS diode 190a and the second TVS diode 190b are protection circuits for protecting the solid capacitor and suppress the transient voltage, and the applied voltage becomes uniform, so that higher voltage is applied to only one TVS diode. By preventing, each TVS diode can operate stably within the range of the rated voltage.

[실시예 4][Example 4]

도 7은 본 발명의 제4 실시예에 따른 고체콘덴서, 제2 정류부, TVS 회로부의 회로 연결 관계를 나타낸 도면이다.7 is a view showing a circuit connection relationship between a solid capacitor, a second rectifier, and a TVS circuit according to a fourth embodiment of the present invention.

제4 실시예는 서로 직렬로 연결된 제2 정류부(140)와 제3 정류부(142)의 양단 출력과 제1 TVS 다이오드(190a)와 제2 TVS 다이오드(190b)가 병렬 결합되고, 제1 TVS 다이오드(190a)와 제2 TVS 다이오드(190b)가 서로 직렬 연결된다.In the fourth embodiment, the output of both ends of the second rectifier 140 and the third rectifier 142 connected in series with each other, the first TVS diode 190a and the second TVS diode 190b are coupled in parallel, and the first TVS diode The 190a and the second TVS diode 190b are connected in series with each other.

제2 정류부(140)와 제3 정류부(142)의 양단 출력과 제1 저항(240), 제1 커패시터(250)과 제2 저항(260), 제2 커패시터(270)가 병렬 결합된다.The output of both ends of the second rectifying unit 140 and the third rectifying unit 142, the first resistor 240, the first capacitor 250, the second resistor 260, and the second capacitor 270 are coupled in parallel.

제1 저항(240)과 제1 커패시터(250)는 서로 직렬 연결되고, 제2 저항(260)과 제2 커패시터(270)은 서로 직렬 연결된다.The first resistor 240 and the first capacitor 250 are connected in series with each other, and the second resistor 260 and the second capacitor 270 are connected in series with each other.

제1 TVS 다이오드(190a)와 제2 TVS 다이오드(190b)의 접속점과, 제1 커패시터(250)와 제2 저항(260)의 접속점과, 제1 TVS 다이오드(190a)와 제2 TVS 다이오드(190b)의 접속점은 서로 연결되어 있다.The connection point of the first TVS diode 190a and the second TVS diode 190b, the connection point of the first capacitor 250 and the second resistor 260, and the first TVS diode 190a and the second TVS diode 190b ) Are connected to each other.

제1 커패시터(250)와 제2 커패시터(270)는 제1 저항(240)와 제2 저항(260)에 의해 충전되며, 제1 커패시터(250)와 제2 커패시터(270)의 충전 전압은 제1 TVS 다이오드(190a)와 제2 TVS 다이오드(190b)에 의하여 정전압으로 유지될 수 있다.The first capacitor 250 and the second capacitor 270 are charged by the first resistor 240 and the second resistor 260, and the charging voltage of the first capacitor 250 and the second capacitor 270 is zero. A constant voltage may be maintained by the 1 TVS diode 190a and the 2nd TVS diode 190b.

입력단에서 발생된 신호 전압의 크기가 제1 커패시터(250)와 제2 커패시터(270)에 충전 전압 이하이면, 입력단에서 발생된 신호 전압의 크기가 출력단으로 통과되지 않는다. 즉, LED 컨버터는 입력 신호가 원하는 DC 전압 이하의 정전류로 출력되지 않는다.When the magnitude of the signal voltage generated at the input terminal is equal to or less than the charging voltage at the first capacitor 250 and the second capacitor 270, the magnitude of the signal voltage generated at the input terminal does not pass to the output terminal. That is, the LED converter does not output the input signal with a constant current below the desired DC voltage.

입력단에서 발생된 신호 전압의 크기가 제1 커패시터(250)와 제2 커패시터(270)에 충전 전압 이상이면, 누설 전류를 접지단자로 흡수시키고, 제1 커패시터(250)와 제2 커패시터(270)에 충전 전압의 정전압 및 회로상의 써지 전압을 방전한다.When the magnitude of the signal voltage generated at the input terminal is equal to or greater than the charging voltage at the first capacitor 250 and the second capacitor 270, the leakage current is absorbed to the ground terminal, and the first capacitor 250 and the second capacitor 270 are absorbed. To discharge the constant voltage of the charging voltage and the surge voltage on the circuit.

제1 TVS 다이오드(190a)와 제2 TVS 다이오드(190b)는 제2 정류부(140)와 제3 정류부(142)에서 정류한 맥류 전압을 평활화하게 된다.The first TVS diode 190a and the second TVS diode 190b smooth the pulsating voltage rectified by the second rectifier 140 and the third rectifier 142.

이상 본 발명을 일실시 예를 통하여 상세히 설명하였으나, 이는 본 발명을 구체적으로 설명하기 위한 것으로, 본 발명에 따른 고체콘덴서를 이용한 LED 컨버터는 이에 한정되지 않는다. 그리고 이상에서 기재된 "포함하다", "구성하다", 또는 "가지다", 등의 용어는 특별히 반대되는 기재가 없는 한 해당 구성요소가 내재될 수 있음을 의미하는 것이므로, 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것으로 해석되어야 하며, 기술적이거나 과학적인 용어를 포함한 모든 용어들은, 다르게 정의되지 않는 한, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에 의해 일반적으로 이해되는 것과 동일한 의미를 가진다.The present invention has been described in detail through one embodiment, but this is for specifically describing the present invention, and the LED converter using the solid capacitor according to the present invention is not limited thereto. In addition, the terms "include", "consist", or "have" as described above mean that the corresponding component can be inherent unless specifically stated to the contrary, excluding other components However, it should be interpreted as being able to further include other components, and all terms, including technical or scientific terms, are generally understood by those skilled in the art to which the present invention pertains, unless otherwise defined. It has the same meaning as being.

또한, 이상의 설명은 본 발명의 기술 사상을 예시적으로 설명한 것에 불과한 것으로서, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 본 발명의 본질적인 특성에서 벗어나지 않는 범위에서 다양한 수정 및 변형 가능하다. 따라서, 본 발명에 개시된 일실시 예들은 본 발명의 기술 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이고, 이러한 일실시 예에 의하여 본 발명의 기술 사상의 범위가 한정되는 것은 아니다. 본 발명의 보호 범위는 아래의 청구범위에 의하여 해석되어야 하며, 그와 동등한 범위 내에 있는 모든 기술 사상은 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.In addition, the above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains may modify and modify various modifications without departing from the essential characteristics of the present invention. Therefore, the exemplary embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to describe the present invention, and the scope of the technical spirit of the present invention is not limited by the exemplary embodiments. The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

본 발명은 전해콘덴서를 고체콘덴서로 대체하고, 내압 및 용량이 낮은 특성이 있는 고체콘덴서를 보호하기 위한 보호 회로를 구비하여 수명이 길면서 주변 조건에 대해 내구성이 강해 안정적인 LED 컨버터를 제공 가능하므로, 산업상 이용가능성이 있다.Since the present invention replaces the electrolytic capacitor with a solid capacitor, and has a protection circuit for protecting the solid capacitor having a low breakdown voltage and capacity, it is possible to provide a stable LED converter with long life and strong durability against ambient conditions. There is industrial availability.

Claims (5)

입력 교류 전압을 정류하여 제1 직류 전압으로 변환하여 출력하는 제1 정류부;A first rectifying unit for rectifying the input AC voltage and converting the input AC voltage into a first DC voltage and outputting the converted voltage; 상기 변환된 제1 직류 전압을 펄스폭 변조하여 제1 교류 전압을 출력하는 PWM 발생부;A PWM generator configured to pulse-modulate the converted first DC voltage to output a first AC voltage; 상기 제1 교류 전압을 제2 교류 전압으로 변환하여 출력하는 변압부;A transformer for converting and outputting the first AC voltage into a second AC voltage; 상기 변압부로부터 출력된 상기 제2 교류 전압을 정류하는 제2 정류부;A second rectifying unit rectifying the second AC voltage output from the transformer unit; 복수의 고체콘덴서를 병렬로 연결되어 형성하고, 상기 제2 정류부의 출력 전압인 제2 교류 전압을 평활시켜 제2 직류 전압으로 출력하는 평활 회로부;A smoothing circuit unit formed by connecting a plurality of solid capacitors in parallel and smoothing a second AC voltage, which is an output voltage of the second rectifying unit, to output a second DC voltage; 상기 평활 회로부로부터 출력되는 상기 제2 직류 전압에 따른 고정 전류를 제공하는 고정 전류 회로부;A fixed current circuit unit providing a fixed current according to the second DC voltage output from the smoothing circuit unit; 상기 고정 전류 회로부로부터 출력되는 전류값을 검출하여 피드백 신호로 출력하는 검출 회로부;A detection circuit unit that detects a current value output from the fixed current circuit unit and outputs it as a feedback signal; 상기 피드백 신호를 전달받아 상기 PWM 발생부를 제어하는 제어부; 및A control unit receiving the feedback signal and controlling the PWM generator; And 상기 평활 회로부의 고체콘덴서를 보호하기 위하여 상기 제2 정류부에 병렬로 연결되어 과도 전압을 억제하여 최대 출력 50V 이하 정전류로 출력되도록 하는 TVS 회로부;A TVS circuit unit connected in parallel to the second rectifying unit to protect the solid capacitor of the smoothing circuit unit to suppress a transient voltage and output a constant current of 50 V or less; 를 포함하는 고체콘덴서를 이용한 LED 컨버터.LED converter using a solid capacitor comprising a. 입력 교류 전압을 정류하여 제1 직류 전압으로 변환하여 출력하는 제1 정류부;A first rectifying unit rectifying the input AC voltage and converting the input AC voltage into a first DC voltage to output the rectified voltage; 상기 변환된 제1 직류 전압을 펄스폭 변조하여 제1 교류 전압을 출력하는 PWM 발생부;A PWM generator configured to pulse-modulate the converted first DC voltage to output a first AC voltage; 상기 제1 교류 전압을 제2 교류 전압으로 변환하여 출력하는 변압부;A transformer for converting and outputting the first AC voltage into a second AC voltage; 상기 변압부로부터 출력된 상기 제2 교류 전압을 정류하는 제2 정류부;A second rectifying unit rectifying the second AC voltage output from the transformer unit; 복수의 고체콘덴서를 병렬로 연결되어 형성하고, 상기 제2 정류부의 출력 전압인 제2 교류 전압을 평활시켜 제2 직류 전압으로 출력하는 평활 회로부;A smoothing circuit unit formed by connecting a plurality of solid capacitors in parallel and smoothing a second AC voltage, which is an output voltage of the second rectifying unit, to output a second DC voltage; 상기 평활 회로부로부터 출력되는 상기 제2 직류 전압에 따른 고정 전류를 제공하는 고정 전류 회로부;A fixed current circuit unit providing a fixed current according to the second DC voltage output from the smoothing circuit unit; 상기 고정 전류 회로부로부터 출력되는 전류값을 검출하여 피드백 신호로 출력하는 검출 회로부;A detection circuit unit that detects a current value output from the fixed current circuit unit and outputs a feedback signal; 상기 피드백 신호를 전달받아 상기 PWM 발생부를 제어하는 제어부; 및A controller that receives the feedback signal and controls the PWM generator; And 상기 평활 회로부의 고체콘덴서를 보호하기 위하여 상기 제2 정류부에 병렬로 연결되어 과도 전압을 억제하여 최대 출력 50V 이하 정전류로 출력되도록 하는 TVS 회로부;A TVS circuit unit connected in parallel to the second rectifying unit to protect the solid capacitor of the smoothing circuit unit to suppress a transient voltage and output a constant current of 50 V or less; 를 포함하며,It includes, 상기 각각의 고체콘덴서에 상기 제2 정류부를 직렬로 각각 접속하고, 상기 각각의 제2 정류부의 다이오드에 상기 TVS 회로부를 병렬로 각각 접속하는 것을 특징으로 하는 고체콘덴서를 이용한 LED 컨버터.An LED converter using a solid capacitor, characterized in that each of the second rectifiers is connected in series to the respective solid capacitors, and the TVS circuits are connected in parallel to the diodes of each of the second rectifiers. 청구항 1 또는 청구항 2에 있어서,The method according to claim 1 or claim 2, 상기 고체콘덴서를 이용한 LED 컨버터는 비절연 방식으로 상기 제1 정류부, 상기 PWM 발생부, 상기 변압부, 상기 제2 정류부, 상기 평활 회로부, 상기 고정 전류 회로부, 상기 검출 회로부, 상기 제어부, 상기 TVS 회로부를 아날로그 그라운드(GND)되는 것을 특징으로 하는 LED 컨버터.The LED converter using the solid capacitor is a non-isolated method, the first rectifier, the PWM generator, the transformer, the second rectifier, the smoothing circuit, the fixed current circuit, the detection circuit, the control, the TVS circuit LED converter characterized in that the analog ground (GND). 청구항 1 또는 청구항 2에 있어서,The method according to claim 1 or claim 2, 상기 고체콘덴서를 이용한 LED 컨버터는 절연 방식으로 상기 제1 정류부, 상기 PWM 발생부, 상기 제어부를 아날로그 그라운드되고, 상기 제2 정류부, 상기 평활 회로부, 상기 고정 전류 회로부 및 상기 TVS 회로부를 디지털 그라운드되는 것을 특징으로 하는 LED 컨버터.In the LED converter using the solid capacitor, the first rectifying part, the PWM generator, and the controller are analogly grounded in an insulating manner, and the second rectifying part, the smoothing circuit part, the fixed current circuit part, and the TVS circuit part are digitally grounded. Features LED converter. 청구항 1 또는 청구항 2에 있어서,The method according to claim 1 or claim 2, 상기 평활 회로부는 전해콘덴서를 상기 복수의 고체콘덴서로 대체하는 경우, 최대 출력이 50V 이내가 되도록 구성하고, 용량 증가를 상기 전해콘덴서의 용량에 대응하도록 상기 고체콘덴서의 개수를 병렬로 구성하는 것을 특징으로 하는 LED 컨버터.When the smoothing circuit unit replaces the electrolytic capacitor with the plurality of solid capacitors, the maximum output is configured to be within 50 V, and the number of the solid capacitors is configured in parallel to increase the capacity to correspond to the capacity of the electrolytic capacitor. LED converter.
PCT/KR2019/017617 2019-01-25 2019-12-12 Led converter using solid capacitor Ceased WO2020153603A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010045913A (en) * 2008-08-12 2010-02-25 Rohm Co Ltd Drive device
KR20130027692A (en) * 2011-09-08 2013-03-18 주식회사 동부하이텍 Isolation-type flyback converter for light emitting diode driver
KR20130080265A (en) * 2012-01-04 2013-07-12 (주) 강동테크 Converter using solid condenser
KR101696656B1 (en) * 2016-05-26 2017-01-16 석주한 Lighting device with ac direct driver
KR20170096424A (en) * 2016-02-16 2017-08-24 이종현 Surge Protection Circuit
KR102011110B1 (en) * 2019-01-25 2019-08-14 금호이앤지 (주) LED Converter Using Solid Capacitor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8648359B2 (en) * 2010-06-28 2014-02-11 Cree, Inc. Light emitting devices and methods

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010045913A (en) * 2008-08-12 2010-02-25 Rohm Co Ltd Drive device
KR20130027692A (en) * 2011-09-08 2013-03-18 주식회사 동부하이텍 Isolation-type flyback converter for light emitting diode driver
KR20130080265A (en) * 2012-01-04 2013-07-12 (주) 강동테크 Converter using solid condenser
KR20170096424A (en) * 2016-02-16 2017-08-24 이종현 Surge Protection Circuit
KR101696656B1 (en) * 2016-05-26 2017-01-16 석주한 Lighting device with ac direct driver
KR102011110B1 (en) * 2019-01-25 2019-08-14 금호이앤지 (주) LED Converter Using Solid Capacitor

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