KR960001247Y1 - Auxiliary power circuit of power apparatus - Google Patents

Auxiliary power circuit of power apparatus Download PDF

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Publication number
KR960001247Y1
KR960001247Y1 KR2019900005564U KR900005564U KR960001247Y1 KR 960001247 Y1 KR960001247 Y1 KR 960001247Y1 KR 2019900005564 U KR2019900005564 U KR 2019900005564U KR 900005564 U KR900005564 U KR 900005564U KR 960001247 Y1 KR960001247 Y1 KR 960001247Y1
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driving
circuit
power supply
auxiliary power
power
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KR2019900005564U
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KR910019064U (en
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박성만
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삼성전기주식회사
서주인
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • H02M1/16Means for providing current step on switching, e.g. with saturable reactor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/02Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10Conversion 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
    • H02M3/145Conversion 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
    • H02M3/155Conversion 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Dc-Dc Converters (AREA)

Abstract

내용 없음.No content.

Description

전원장치의 보조전원회로Auxiliary Power Circuit of Power Supply

제 1 도는 종래의 전원장치의 회로구성도1 is a circuit diagram of a conventional power supply device

제 2 도는 이 고안에 따른 전원장치의 블럭구성도2 is a block diagram of a power supply according to the present invention

제 3 도는 제 2 도의 실시회로도이다.3 is a circuit diagram of FIG. 2.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 정류평활회로부 2 : 구동용IC1: rectification smoothing circuit 2: driving IC

3 : 인버터부 4,40 : 보조전원회로부3: inverter section 4,40: auxiliary power circuit section

5,50 : 바이어스 제공부 41 : 초기구동단5,50: bias providing part 41: initial drive stage

42 : 차단회로단 BD : 브릿지 정류기42: blocking circuit stage BD: bridge rectifier

T : 스위칭 트랜스 Q1, Q2 : 트랜지스터T: switching transformer Q1, Q2: transistor

Q3 : FETQ3: FET

이 고안은 전원장치의 보조전원회로에 관한 것으로서, 보다 상세하게는 파워온시 초기에 부하구동용회로의 최초구동전압을 인가시키기 위한 보조전원회로에 관한 것이다.The present invention relates to an auxiliary power supply circuit of a power supply device, and more particularly, to an auxiliary power supply circuit for applying an initial driving voltage of a load driving circuit at an initial stage at power-on.

제 1 도는 종래의 전원장치를 나타낸 것으로서, 구동용 회로를 초기구동시키는 보조전원회로(4)는 상용교류전원을 저주파 트랜스(T2)를 이용하여 소정치로 다운시키고, 정류용 다이오드(D)와 평활콘덴서(C)로 직류로 변환시킨후 구동용IC(2)로 인가시키도록 되었다.FIG. 1 shows a conventional power supply device, wherein the auxiliary power supply circuit 4 for initial driving the driving circuit is brought down the commercial AC power supply to a predetermined value using a low frequency transformer T2, and the rectifying diode D and After converting the DC into a smoothing capacitor (C), it was applied to the driving IC (2).

한편, 이 구동용IC(2)의 출력에 의해 FET(Q)가 구동되어 인버터부(3)와 바이어스 제공부(5)가 구동되고 바이어스 제공부(5)에 의해서 구동용IC(2)가 계속 구동되게 된다.On the other hand, the FET Q is driven by the output of the driving IC 2 so that the inverter unit 3 and the bias providing unit 5 are driven, and the driving IC 2 is driven by the bias providing unit 5. It will continue to run.

이와 같은 종래의 회로는 상기 인버터부(3)가 구동된 후에도 보조전원회로부(4)가 계속 동작하므로 소비전력이 증대되어 비효율적이며, 보조전원 회로부(4)의 구성이 부피와 중량이 큰 저주파트랜스(T2)를 이용하므로 소형경량화하는 추세에 역행하게 되며, 그 설치공간이 크고 고가로 되는 문제가 있었다.Such a conventional circuit is inefficient because the auxiliary power circuit unit 4 continues to operate even after the inverter unit 3 is driven, resulting in an inefficient power consumption, and a low frequency transformer having a large volume and weight in the configuration of the auxiliary power circuit unit 4. Since the use of (T2) is to counter the trend of compact and lightweight, there was a problem that the installation space is large and expensive.

또한, 상기 정류용 다이오드(D)와 평활콘덴서(C)도 대용량의 것이 요구되므로 상기한 문제가 더욱 크게 되며, 저주파 트랜스(T2)에 의한 잡음이 발생하여 노이즈 문제를 해소시키기 곤란한 것이다.In addition, since the rectifying diode D and the smoothing capacitor C are also required to have a large capacity, the above-mentioned problem is further increased, and the noise caused by the low frequency transformer T2 is generated, making it difficult to solve the noise problem.

이 고안은 이와 같은 문제를 일시에 해결하고저 안출한 것으로서, 이 고안의 목적은 파워온시의 초기에만 구동용회로를 구동시키고 구동용회로의 정상동작시에는 차단되는 보조전원회로부를 구성하여 전력의 소모를 방지하고 교류힘발생을 방지하여 노이즈의 문제를 해소시키며, 적은 설치공간과 열량화를 도모한 전원장치의 보조전원회로를 제공하는데 있다.The present invention solves such a problem at a time and solves the problem. The object of the present invention is to drive the driving circuit only at the initial stage of power-on and to configure the auxiliary power circuit unit which is cut off during the normal operation of the driving circuit. It is to provide the auxiliary power circuit of the power supply device to prevent the consumption of noise and to prevent the occurrence of AC power, to solve the problem of noise, and to reduce the installation space and the amount of heat.

이와 같은 이 고안을 첨부도면에 의해 상세히 설명하면 다음과 같다.This invention is described in detail by the accompanying drawings as follows.

먼저, 제 2 도는 이 고안에 따른 전원장치의 블럭구성도로서, 상용교류전원을 직류로 변환시키는 정류평활회로부(1)와, 부하에 구동전원을 공급하는 구동용IC(2)와 파워온시 초기에 이 구동용IC(2)에 구동입력을 제공하며 구동용IC(2)의 정상동작시 오프되는 보조전원회로부(40)와, 이 보조전원회로부(40)의 작동후 상기 구동용IC(2)의 구동전원을 공급하는 바이어스 제공부(50)와, 부하에 전원을 공급하는 인버터부(3)와를 구비한 관련 구성으로 되었다.First, FIG. 2 is a block diagram of a power supply device according to the present invention, which includes a rectification smoothing circuit unit 1 for converting a commercial AC power into a direct current, a driving IC 2 for supplying driving power to a load, and a power-on time. An auxiliary power supply circuit unit 40 which initially provides a driving input to the driving IC 2 and is turned off during the normal operation of the driving IC 2, and after the operation of the auxiliary power circuit unit 40; A related art provided with a bias providing unit 50 for supplying the driving power of 2) and an inverter unit 3 for supplying power to the load.

여기서, 보조전원회로부(40)는 파워온시 초기에 구동용IC(2)를 초기구동시키는 초기구동단(41)과, 인버터부(3)와 바이어스 제공부(50)의 구동시 초기구동단(41)을 오프시키는 차단회로단(42)으로 구성되었다.Here, the auxiliary power supply circuit unit 40 includes an initial drive stage 41 for initially driving the driving IC 2 at the time of power-on, and an initial drive stage for driving the inverter unit 3 and the bias providing unit 50. And a blocking circuit stage 42 for turning off 41.

제 3 도는 이 고안의 한 실시회로를 나타낸 것으로서, 상기 정류평활회로부(1)는 브릿지정류기(BD)와 평활콘덴서(C1)의 접속으로 된 주지구성으로되며, 보조전원회로부(40)는 양파정류용인 정류다이오드(D1), (D2)와, 저항(R1),(R2) 및 평활용 콘덴서(C2)와 역류방지용인 다이오드(D4)로 구성된 초기구동단(41)과, 스위칭 트랜지스터(Q1),(Q2)와 이 트랜지스터(Q1),(Q2)의 바이어스 인가용인 저항(R3),(R4),(R5)으로 구성뇐 차단회로단(42)을 구비한 것으로 되고, 트랜지스터(Q1)의 에미터측이 상기 다이오드(D4)의 애노드측에 접속된 구성으로 되었다.3 shows an embodiment of the present invention, wherein the rectification smoothing circuit unit 1 has a well-known configuration in which the bridge rectifier BD is connected to the smoothing capacitor C1, and the auxiliary power supply circuit unit 40 is onion rectifying. Initial drive stage 41 comprising a rectifying diode D1, D2, resistors R1, R2 and a smoothing capacitor C2, and a diode D4 for preventing backflow, and a switching transistor Q1. And a blocking circuit stage 42 composed of Q2 and resistors R3, R4, and R5 for bias application of the transistors Q1 and Q2. The emitter side was connected to the anode side of the diode D4.

구동용IC(2)는 기준전압단(Vref)의 출력이 저항(R5)을 통해 트랜지스터(Q2)의 바이어스전압을 제공하도록 되었다.The driving IC 2 is configured such that the output of the reference voltage terminal Vref provides the bias voltage of the transistor Q2 through the resistor R5.

또한 입력단(Vin)은 초기구둥단(41)의 다이오드(D4)의 캐소드와 접속되었다.In addition, the input terminal Vin is connected to the cathode of the diode D4 of the initial stage end 41.

상기 인버터부(3)는 상기 구동용IC(2)의 출력에 의해 구동되는 MOS형 FET(Q3)와, 부하에 전원을 공급하는 스위칭 트랜스(T1)로 구성되고 이 스위칭 트랜스(T1)의 3차측에 다이오드(D5)와 콘덴서(C3) 구성의 정류회로를 설치하여 상기 구동용IC(2)의 바이어스전원을 제공하는 바이어스 제공부(50)를 구성시켰다.The inverter section 3 is composed of a MOS type FET Q3 driven by the output of the driving IC 2 and a switching transformer T1 for supplying power to a load. A rectifier circuit having a diode D5 and a capacitor C3 is provided on the vehicle side to configure a bias providing unit 50 for providing a bias power supply for the driving IC 2.

이와 같이 접속 구성된 이 고안의 작동은, 파워온시 초기에 보조전원회로부(40)의 초기구동단(41)의 다이오드(D1, D2)와 저항(R1),(R2), 콘덴서(C2)에 의해 교류가 정류 및 평활되어 다이오드(D4)를 통해 구동용IC(2)의 입력단(Vin)에 인가된다.The operation of this design, which is connected in this way, is initially connected to the diodes D1 and D2, the resistors R1, R2 and the capacitor C2 of the initial driving stage 41 of the auxiliary power circuit unit 40 at the time of power-on. AC is rectified and smoothed and applied to the input terminal Vin of the driving IC 2 through the diode D4.

여기서, 콘덴서(C2)와 저항(R2)에 의한 시정수에 관련되어 비안정된 직류전압이 다이오드(D4)를 통해 구동용IC(2)의 입력단(Vin)에 전원이 인가되는데, 초기의 트랜지스터(Q1),(Q2)는 바이어스인가가 없게 되어 모두 오프상태이다.Here, power is applied to the input terminal Vin of the driving IC 2 through the diode D4 by an unstable DC voltage related to the time constants of the capacitor C2 and the resistor R2. Q1) and (Q2) have no bias applied, and both are off.

구동용IC(2)는 상기 콘덴서(C2) 저항(R2)에 대한 방전에 의해 최소동작전압에 이르는 순간 구동된다. 즉 입력단(Vin)에 로직 "Ⅱ"가 인가되면, 출력이 로직 "Ⅱ"로 되어 FET(Q3)가 턴온되게 되고·정류평활회로부(1)의 출력이 인버터부(3)의 스위칭 트랜스(T1)의 1차측을 통해 도통되며, 2차측에 유기되어 부하측으로 전원을 공급하게 된다.The driving IC 2 is driven at the moment when the minimum operating voltage is reached by the discharge of the capacitor C2 resistor R2. That is, when logic "II" is applied to the input terminal Vin, the output becomes logic "II", and the FET Q3 is turned on, and the output of the rectification smoothing circuit unit 1 is the switching transformer T1 of the inverter unit 3. It is conducted through the primary side of) and is induced on the secondary side to supply power to the load side.

또한, 3차측에도 유기되어 3차측에서는 구동용IC(2)를 구동시킬 수 있는 충분한 전압이 발생하여 3차측의 다이오드(D5) 콘덴서(C3) 구성의 정류회로에 의해 직류로 변환되어서, 구동용IC(2)의 입력단(Vin)에 인가되어 구동용IC(2)의 바이어스 전원을 제공하게 된다.In addition, the voltage is also induced on the tertiary side, and on the tertiary side, a sufficient voltage for driving the driving IC 2 is generated and converted to direct current by a rectifying circuit of the diode (D5) condenser (C3) configuration of the tertiary side. It is applied to the input terminal Vin of the IC 2 to provide a bias power supply for the driving IC 2.

이후, 구동용IC(2)의 기준전압단(Vref)이 로직 "Ⅱ"로 되어서, 이 출력은 보조전원회로부(40)의 차단회로단(42)의 저항(R5)을 통해 트랜지스터(Q2)에 인가되어 트랜지스터(Q2)가 도통되고, 이에 따라 트랜지스터(Q1)에도 바이어스가 인가되어 도통되므로 다이오드(D4)의 애노드측이 전기적으로 그라운드와 단락상태로 되어 0볼트로 된다.Thereafter, the reference voltage terminal Vref of the driving IC 2 becomes a logic " II ", so that the output is supplied through the resistor R5 of the blocking circuit terminal 42 of the auxiliary power supply circuit section 40 to the transistor Q2. Is applied to the transistor Q2, so that a bias is also applied to the transistor Q1 so that the anode side of the diode D4 is electrically shorted to ground and becomes zero volts.

따라서, 구동용IC(2)는 스위칭 트랜스(T1)의 3차측에 의한 바이어스 전원만으로 계속 구동되게 된다.Therefore, the driving IC 2 continues to be driven only by the bias power supply by the tertiary side of the switching transformer T1.

이와 같이 최초의 파워온시 보조전원회로부(40)의 초기구동단(41)에 의해 구동용IC(2)가 초기동작되어 인버터부(3)를 구동시키고, 이 인버터부(3)의 구동에 의해 바이어스 제공부(50)가 구동되어 구동용IC(2)에 안정된 바이어스를 제공한다. 이때 구동용IC(2)의 동작후에는 불필요한 보조전원회로부(40)를 오프시키도록 한다.As described above, the driving IC 2 is initially operated by the initial driving stage 41 of the auxiliary power supply circuit unit 40 at the first power-on to drive the inverter unit 3, and the drive unit 3 is driven. As a result, the bias providing unit 50 is driven to provide a stable bias to the driving IC 2. At this time, after the operation of the driving IC 2, the unnecessary auxiliary power circuit unit 40 is turned off.

상술한 바와 같이 이 고안은 초기구동단(41)과 차단회로단(42)으로 된 보조전원회로부(40)로 되어 회로의 정육면적이 극소화되고, 고가의 저주파 트랜스가 사용되지 않으므로 험등의 노이즈가 없게되여, 저가의 구성으로 되어 원가가 절감되는 효과가 있다.As described above, this design has an auxiliary power circuit section 40 consisting of an initial driving stage 41 and a blocking circuit stage 42, thereby minimizing the regular meat area of the circuit and eliminating the use of expensive low frequency transformers. There is no effect, the cost is reduced because of the low-cost configuration.

Claims (1)

정류평활회로부와 구동용IC회로와 바이어스 제공부 및 인버터부, 보조전원회로부를 구비한 전원장치에 있어서,In the power supply device comprising a rectification smoothing circuit section, a driving IC circuit, a bias providing section, an inverter section and an auxiliary power supply circuit section 상기 보조전원회로부(40)는, 다이오드(D2),(D3)로 상용교류를 양파정류시키며 콘덴서(C2) 저항(R2)에 의해 평활시켜 다이오드(D4)를 통해 구동용IC(2)의 초기구동전원을 제공하는 초기구동단(4)과,The auxiliary power supply circuit unit 40 rectifies the commercial exchange with the diodes D2 and D3 and smoothes them by the capacitor C2 resistor R2, thereby initializing the driving IC 2 through the diode D4. An initial drive stage 4 for providing a driving power source, 트랜지스터(Q1),(Q2)와 저항(R3),(R4),(R5)이 관련 접속되어 구동용IC(2)의 구동시 초기구동단의 출력을 차단하는 차단회로단(42)과를 구비한 것을 특징으로 하는 전원장치의 보조전원회로.Transistors Q1, Q2 and resistors R3, R4, and R5 are connected to each other to cut off the circuit stage 42 for interrupting the output of the initial drive stage when the driving IC 2 is driven. Auxiliary power supply circuit of the power supply, characterized in that provided.
KR2019900005564U 1990-04-30 1990-04-30 Auxiliary power circuit of power apparatus KR960001247Y1 (en)

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KR960001247Y1 true KR960001247Y1 (en) 1996-02-09

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