KR870004545A - Overvoltage protection and output state detection circuit of power supply - Google Patents

Overvoltage protection and output state detection circuit of power supply Download PDF

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Publication number
KR870004545A
KR870004545A KR1019850008022A KR850008022A KR870004545A KR 870004545 A KR870004545 A KR 870004545A KR 1019850008022 A KR1019850008022 A KR 1019850008022A KR 850008022 A KR850008022 A KR 850008022A KR 870004545 A KR870004545 A KR 870004545A
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KR
South Korea
Prior art keywords
output
shutdown
control unit
signal
detection circuit
Prior art date
Application number
KR1019850008022A
Other languages
Korean (ko)
Other versions
KR890000306B1 (en
Inventor
김철진
Original Assignee
권혁조
동양정밀공업 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.)
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Publication date
Application filed by 권혁조, 동양정밀공업 주식회사 filed Critical 권혁조
Priority to KR1019850008022A priority Critical patent/KR890000306B1/en
Publication of KR870004545A publication Critical patent/KR870004545A/en
Application granted granted Critical
Publication of KR890000306B1 publication Critical patent/KR890000306B1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage

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  • Dc-Dc Converters (AREA)
  • Protection Of Static Devices (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

내용 없음No content

Description

전원공급기의 과전압보호 및 출력상태 검지회로Overvoltage protection and output state detection circuit of power supply

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

제1도는 본 발명을 포함한 전원공급장치의 전체구성블럭도1 is a block diagram of the overall configuration of a power supply including the present invention

제2도는 제1도의 PWM 제어부(4)의 내부 회로 구성도2 is an internal circuit diagram of the PWM control unit 4 of FIG.

제3도는 제1도의 본 발명인 과전압보호 및 출력상태 검지회로(7)의 세부회로도3 is a detailed circuit diagram of the overvoltage protection and output state detection circuit 7 of the present invention.

Claims (1)

본문에 설명되고 도면에 도시된 바와 같이 PWM제어부(4)와 출력정류회로부(6)의 출력단(F) 사이에 과전압보호 및 출력 상태검지회로(7)를 연결하는데 있어서 PWM제어부(4)의 Vref 단자(A)에 Vout 및 Vout의 분압된 전압과 비교하기 위한 출력전압 비교부(7a)를 연결하고, 출력전압비교부(7a)의 출력을 Vsrc의 분압된 전압과 비교하기 위한 정전압비교부(7c) 및 셧다운신호의 논리를 발생하기 위한 셧다운신호발생부(7b)의 입력단에 각각 연결하며, 정전압비교부(7c)에서 출력되는 신호가 출력전원이상 감지부(7d)에 인가되어 출력전원이상감지부(7d)에서 출력되는 논리신호가 출력전원 상태표시부(7f) 및 셧다운제어부(7e)에 인가되도록 연결하여 출력전원상태표시부(7f)의 출력신호는 컴퓨터등의 부하로 전달될 수 있도록 하고, 셧다운 제어부(7e)에 인가된 출력 전원이상감지부(7d)의 출력신호를 분압한 전압과 Vsrc의 분압된 전압이 비교되어 출력되는 논리신호가 셧다운 신호발생부(7d)에 인가되어 셧다운 신호의 논리를 PWM 제어부(4)의 셧다운부(4C) 입력단자(C)에 인가하므로서 PWM 제어부(4)를 인에이불 혹은 디스에이블하도록 연결하여 구성한 것을 특징으로 하는 전원공급기의 과전압 보호 및 출력상태검지회로,Vref of the PWM control unit 4 in connecting the overvoltage protection and output state detection circuit 7 between the PWM control unit 4 and the output terminal F of the output rectifying circuit unit 6 as described herein and shown in the drawings. An output voltage comparator 7a is connected to the terminal A for comparison with the divided voltages of Vout and Vout, and a constant voltage comparator 7c for comparing the output of the output voltage comparator 7a with the divided voltage of Vsrc. ) Is connected to the input terminal of the shutdown signal generator 7b for generating logic of the shutdown signal, and the signal output from the constant voltage comparator 7c is applied to the output power abnormality detection unit 7d to sense the output power abnormality. The logic signal outputted from the branch portion 7d is connected to the output power state display unit 7f and the shutdown control unit 7e so that the output signal of the output power state display unit 7f can be transmitted to a load such as a computer. Output power abnormality applied to the shutdown control unit 7e The voltage divided by the output signal of the branch portion 7d and the divided voltage of Vsrc are compared and outputted to the shutdown signal generator 7d to output the logic of the shutdown signal to the shutdown portion 4C of the PWM controller 4. Overvoltage protection and output state detection circuit of a power supply, characterized in that configured by connecting to the PWM control unit 4 to enable or disable by applying to the input terminal (C), ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019850008022A 1985-10-30 1985-10-30 Circuit for prevention of excess voltage KR890000306B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019850008022A KR890000306B1 (en) 1985-10-30 1985-10-30 Circuit for prevention of excess voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019850008022A KR890000306B1 (en) 1985-10-30 1985-10-30 Circuit for prevention of excess voltage

Publications (2)

Publication Number Publication Date
KR870004545A true KR870004545A (en) 1987-05-11
KR890000306B1 KR890000306B1 (en) 1989-03-13

Family

ID=19243406

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019850008022A KR890000306B1 (en) 1985-10-30 1985-10-30 Circuit for prevention of excess voltage

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Country Link
KR (1) KR890000306B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020037892A (en) * 2000-11-15 2002-05-23 양준열 A buck conveerter with oevr voltage protection circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020037892A (en) * 2000-11-15 2002-05-23 양준열 A buck conveerter with oevr voltage protection circuit

Also Published As

Publication number Publication date
KR890000306B1 (en) 1989-03-13

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