KR970031300A - A circuit for starting softly the power circuit - Google Patents

A circuit for starting softly the power circuit Download PDF

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Publication number
KR970031300A
KR970031300A KR1019950042892A KR19950042892A KR970031300A KR 970031300 A KR970031300 A KR 970031300A KR 1019950042892 A KR1019950042892 A KR 1019950042892A KR 19950042892 A KR19950042892 A KR 19950042892A KR 970031300 A KR970031300 A KR 970031300A
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KR
South Korea
Prior art keywords
voltage
output
fbt
error
circuit
Prior art date
Application number
KR1019950042892A
Other languages
Korean (ko)
Inventor
최현철
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950042892A priority Critical patent/KR970031300A/en
Publication of KR970031300A publication Critical patent/KR970031300A/en

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Abstract

본 발명은, FBT출력부로부터 출력되는 초기전압의 오차에 대해 보상수단을 이용하여 보상함으로써 전원부에서 인가되는 직류전원의 오버슈트로 인한 수평출력 트랜지스터가 손상되는 것을 방지할 수 있도록 된 전원회로의 소프트 스타트회로에 관한 것으로, FBT출력부(10)와, 피드백 전압조절부(20), 전류모드 PWM제어기(30), 상기 FBT출력부(10)로 부터 입력되는 초기전압의 오차를 축적하여 보상하도록 하는 제어신호를 출력하는 적분수단(40) 및, 상기 초기전압의 오차에 대한 보상 전압을 출력하는 보상수단(50)으로 구성된 것을 특징으로 한다.According to the present invention, it is possible to prevent the horizontal output transistor from being damaged due to the overshoot of the DC power applied from the power supply unit by compensating for the error of the initial voltage output from the FBT output unit using the compensation means. A start circuit, which accumulates and compensates an error of an initial voltage input from an FBT output unit 10, a feedback voltage adjusting unit 20, a current mode PWM controller 30, and the FBT output unit 10. Integrating means 40 for outputting a control signal, and compensation means 50 for outputting a compensation voltage for the error of the initial voltage.

Description

전원회로의 소프트 스타트회로(A circuit for starting softly the power circuit)A circuit for starting softly the power circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 2 도는 본 발명에 따른 전원회로의 소프트 스타트회로의 블록도.2 is a block diagram of a soft start circuit of a power supply circuit according to the present invention.

제 3 도는 본 발명에 따른 전원회로의 소프트 스타트회로도.3 is a soft start circuit diagram of a power supply circuit according to the present invention;

Claims (3)

FBT출력부(10)와, 피드백전압조절부(20), 전류모드 PWM제어기(30), 상기 FBT출력부(10)로부터 입력되는 초기전압의 오차를 축적하여 보상하도록 하는 제어신호를 출력하는 적분수단(40) 및, 상기 초기전압의 오차에 대한 보상 전압을 출력하는 보상수단(50)으로 구성된 것을 특징으로 하는 전원회로의 소프트 스타트회로.Integral for outputting a control signal for accumulating and compensating for the error of the initial voltage input from the FBT output unit 10, the feedback voltage adjusting unit 20, the current mode PWM controller 30, and the FBT output unit 10. Means (40) and compensating means (50) for outputting a compensating voltage for the error of the initial voltage. 제1항에 있어서, 상기 보상수단(50)은 에미터가 전류모드 PWM제어기(UC 3842)의 Verf단자에 접속되고, 베이스가 저항(R9)을 매개로 Verf단자에 접속됨과 더불어 캐패시터(C5)를 매개로 접지되며, 콜렉터가 캐패시터(C4)를 매개로 접지됨과 더불어 분압저항(R7, R8)과 다이오드(Dl)를 매개로 전류모드 PWM제어기(UC3842)의 Vfb단자에 접속된 트랜지스터(Q1)를 구비하여 구성된 것을 특징으로 하는 전원회로의 소프트 스타트회로.The capacitor C5 of claim 1, wherein the compensator 50 has an emitter connected to a Verf terminal of a current mode PWM controller UC 3842, and a base connected to a Verf terminal via a resistor R9. Is connected to the Vfb terminal of the current mode PWM controller (UC3842) via the voltage divider (R7, R8) and the diode (Dl). Soft start circuit of the power supply circuit, characterized in that provided with. 제1항에 있어서, 상기 보상수단(50)의 출력전압이 FBT출력부(10)로부터 출력되는 전압과 반비례적으로 출력되는 것을 특징으로 하는 전원회로의 소프트 스타트회로.2. The soft start circuit of claim 1, wherein the output voltage of the compensating means is output in inverse proportion to the voltage output from the FBT output section. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950042892A 1995-11-22 1995-11-22 A circuit for starting softly the power circuit KR970031300A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950042892A KR970031300A (en) 1995-11-22 1995-11-22 A circuit for starting softly the power circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950042892A KR970031300A (en) 1995-11-22 1995-11-22 A circuit for starting softly the power circuit

Publications (1)

Publication Number Publication Date
KR970031300A true KR970031300A (en) 1997-06-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950042892A KR970031300A (en) 1995-11-22 1995-11-22 A circuit for starting softly the power circuit

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KR (1) KR970031300A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100486355B1 (en) * 1997-12-19 2005-06-16 페어차일드코리아반도체 주식회사 Pulse width modulation controlling apparatus with over load protection using soft start and frequency synchronizing method
KR100920957B1 (en) * 2007-10-23 2009-10-09 엘지이노텍 주식회사 Soft Start Circuit of Power supply device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100486355B1 (en) * 1997-12-19 2005-06-16 페어차일드코리아반도체 주식회사 Pulse width modulation controlling apparatus with over load protection using soft start and frequency synchronizing method
KR100920957B1 (en) * 2007-10-23 2009-10-09 엘지이노텍 주식회사 Soft Start Circuit of Power supply device

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