KR980006748A - A power supply - Google Patents

A power supply Download PDF

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Publication number
KR980006748A
KR980006748A KR1019960021451A KR19960021451A KR980006748A KR 980006748 A KR980006748 A KR 980006748A KR 1019960021451 A KR1019960021451 A KR 1019960021451A KR 19960021451 A KR19960021451 A KR 19960021451A KR 980006748 A KR980006748 A KR 980006748A
Authority
KR
South Korea
Prior art keywords
voltage
resistor
power supply
unit
power
Prior art date
Application number
KR1019960021451A
Other languages
Korean (ko)
Other versions
KR0185856B1 (en
Inventor
황기봉
Original Assignee
배순훈
대우전자주식회사
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Application filed by 배순훈, 대우전자주식회사 filed Critical 배순훈
Priority to KR1019960021451A priority Critical patent/KR0185856B1/en
Publication of KR980006748A publication Critical patent/KR980006748A/en
Application granted granted Critical
Publication of KR0185856B1 publication Critical patent/KR0185856B1/en

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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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33538—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only of the forward type
    • 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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits

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

Abstract

본 발명은 전원 공급 장치에 관한 것으로, 본 발명의 장치는 상용 교류전압을 직류 전압으로 변환하는 직류전원 공급부(10)와 ; 상기 직류전원을 입력받아 유도 기전력을 발생하는 변압기(20) ; 상기 변압기(20)의 1 차측권선에 연결된 파워 트랜지스터(30) ; 입력된 피드백 전압에 따라 상기 파워 트랜지스터(30)의 동작을 PWM제어하는 제어 IC(40) 및 ; 상기 변압기(20)로부터 입력된 전압을 직류 전압으로 변환하여 모니터의 각 회로에 공급하는 출력부(50)가 구비되어진 전원 공급 장치에 있어서, 상기 출력부(50)로부터 전원 전압을 인가받아 상기 과전압 정도에 따라 과전압 감지신호를 출력하는 감지부(60) ; 1 차측 권선과 2 차측 권선의 접지를 분리시켜, 상기 감지 신호를 1 차측 권선에 연결하고, 2 차측 권선에 유기된 전압을 전류 제한하여 상기 제어 IC(40)의 피드백 단자에 입력시키는 포워드 컨버터(70)를 포함하여 구성되어 있어, SMPS로부터 출력되는 전원 전압을 검출하여 상기 전압이 일정 전압을 유지하도록 하는 과전압 검출장치를 좀더 간단하게 구현한다는 데 그 효과가 있다.The present invention relates to a power supply device, the apparatus of the present invention includes a DC power supply unit 10 for converting a commercial AC voltage into a DC voltage; A transformer 20 for receiving the DC power and generating induced electromotive force; A power transistor 30 connected to the primary winding of the transformer 20; A control IC 40 for PWM controlling the operation of the power transistor 30 according to the input feedback voltage; In the power supply device is provided with an output unit 50 for converting the voltage input from the transformer 20 into a direct current voltage to supply to each circuit of the monitor, the power supply voltage is applied from the output unit 50 to the overvoltage A detection unit 60 outputting an overvoltage detection signal according to a degree; A forward converter separating the ground of the primary winding and the secondary winding, connecting the sensing signal to the primary winding, and limiting the voltage induced in the secondary winding to the feedback terminal of the control IC 40. 70), it is effective to more simply implement the over-voltage detection device for detecting the power supply voltage output from the SMPS to maintain the voltage.

Description

전원 공급 장치(A power suply)A power suply

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제 1 도는 일반적인 SMPS를 도시한 회로도.1 is a circuit diagram showing a general SMPS.

제 2 도는 본 발명에 따른 전원 공급 장치를 도시한 회로도.2 is a circuit diagram showing a power supply according to the present invention.

제 3 도는 본 발명의 장치에 절전 기능을 부가시킨 일실시예를 도시한 회로도.3 is a circuit diagram showing an embodiment in which a power saving function is added to the apparatus of the present invention.

Claims (5)

상용 교류 전압을 직류 전압으로 변환하는 직류 전원 공급부(10)와 ; 상기 직류 전압을 입력받아 유도 기전력을 발생하는 변압기(20) ; 상기 변압기(20)의 1차측 권선에 연결된 파워 트랜지스터(30) ; 입력된 피드백 전압(V b)에 따라 상기 파워 트랜지스터(30)의 동작을 PWM 제어하는 제어 IC(40) ; 및 상기 변압기(20)의 2차측 전압을 직류 전압으로 변환하여 각 회로에 공급하는 출력부(50)가 구비되어진 전원 공급 장치에 있어서, 상기 출력부(50)로부터 전원 전압을 인가받아 상기 과전압정도에 따라 과전압 감지 신호를 출력하는 감지부(60)와 ; 1차측 권선과 2차측 권선의 접지를 분리시켜, 상기 감지 신호를 1 차측 권선에 연결하고, 2 차측 권선에 유기된 전압을 전류 제한 하여 상기 제어 IC(40)의 피드백 단자에 입력시키는 포워드 컨버터(70)를 포함하여 구성되어 있는 것을 특징으로 하는 전원 공급 장치.A DC power supply unit 10 for converting a commercial AC voltage into a DC voltage; A transformer for generating the induced electromotive force by receiving the DC voltage; A power transistor 30 connected to the primary winding of the transformer 20; Input feedback voltage (V b ) a control IC 40 for PWM controlling the operation of the power transistor 30 in accordance with; And an output unit 50 for converting the secondary side voltage of the transformer 20 into a DC voltage and supplying it to each circuit, the power supply device being supplied with the power voltage from the output unit 50. A detection unit 60 for outputting an overvoltage detection signal according to the present invention; A forward converter which separates the ground of the primary winding and the secondary winding, connects the sensing signal to the primary winding, and limits the voltage induced in the secondary winding to the feedback terminal of the control IC 40 by current limiting. 70) comprising a power supply. 제 1 항에 있어서, 상기 감지부(50)는, 제 1 저항(R1)의 상기 출력부(50)의 출려단에 연결되어 있으며, 상기 제 1 저항(R1)의 다른 한쪽단이 제 2 항(R2)에 연결되어 있고, 상기 제 2 저항(R2)의 다른 한쪽단이 접지된 구조로 되어 있는 것을 특징으로 하는 전원 공급 장치.The method of claim 1, wherein the sensing unit 50 is connected to the output end of the output unit 50 of the first resistor (R1), the other end of the first resistor (R1) of claim 2 And a second end of the second resistor (R2) grounded. 제 2 항에 있어서, 상기 포워드 컨버터(70)는, 1 차측 권선과 2 차측 권선으 접지가 분리되어 있으며, 1 차측 권선이 제 3 저항(R3)을 통해 상기 제 1 저항(R1)과 제 2 저항(R2) 사이에 병렬로 연결되어 있고, 상기 2 차측 권선이 제 4 저항(R4)를 통해 상기 제어 IC(40)의 피드백 단자에 연결되어 있고, 커패시터(C)와 제 5저항(R5)이 각각 상기 제 4 저항(R4)과 병렬로 연결된 채 한쪽끝이 접지된 구조로 되어 있는 것을 특징으로 하는 전원 공급 장치.The method of claim 2, wherein the forward converter 70, the ground of the primary winding and the secondary winding is separated, the primary winding through the third resistor (R3) the first resistor (R1) and the second It is connected in parallel between the resistor (R2), the secondary winding is connected to the feedback terminal of the control IC 40 through the fourth resistor (R4), the capacitor (C) and the fifth resistor (R5) The power supply device characterized in that the one end is grounded while being connected in parallel with each of the fourth resistor (R4). 제 1 항에 있어서, 절전 요구가 있으며 상기 감지부(60)에 일정 전압을 인가하는 절전 모드 제어부(80)를 더 구비된 것을 특징으로 하는 전원 공급 장치.The power supply apparatus according to claim 1, further comprising a power saving mode control unit (80) for requesting power saving and applying a predetermined voltage to the detection unit (60). 제 4 항에 있어서, 상기 절전 모드 제어부(80)는, 베이스단이 제 6 저항(R6)을 통해 마이콤으로 부터 절전신호를 입력받고, 콜렉터단이 제 7저항(R7)을 통해 일정전압을 인가받고, 어미터단이 접지되어 있는 제 1 트랜지스터와; 베이스단이 상기 제 7 저항(R7)과 제 1 트래지스터(Q1)의 콜렉터단 사이에 병렬로 연결되고, 콜렉터단이 상기 출력부(50)의 출력단에 연결되고, 에미터다이 상기 감지부(60)에 연결되어 있는 제 2 트랜지스터(Q2)로 구성되어 있는 것을 특징으로 하는 전원 공급 장치.The power saving mode control unit 80 of claim 4, wherein the base terminal receives a power saving signal from the microcomputer through the sixth resistor R6, and the collector terminal applies a constant voltage through the seventh resistor R7. A first transistor having a terminal end connected to ground; A base terminal is connected in parallel between the seventh resistor R7 and the collector terminal of the first transistor Q1, the collector terminal is connected to the output terminal of the output unit 50, and the emitter die detection unit 60 And a second transistor (Q2) connected to the power supply.
KR1019960021451A 1996-06-14 1996-06-14 Power supply KR0185856B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960021451A KR0185856B1 (en) 1996-06-14 1996-06-14 Power supply

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Application Number Priority Date Filing Date Title
KR1019960021451A KR0185856B1 (en) 1996-06-14 1996-06-14 Power supply

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KR980006748A true KR980006748A (en) 1998-03-30
KR0185856B1 KR0185856B1 (en) 1999-05-15

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100387380B1 (en) * 2000-09-08 2003-06-19 박준호 Switching mode power supply with high efficiency
KR100388226B1 (en) * 1998-03-30 2003-09-19 주식회사 하이닉스반도체 Input protection circuit in semiconductor integrated circuit
WO2006112601A1 (en) * 2005-02-22 2006-10-26 Oh Seok Kwon Golf training apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100605120B1 (en) * 2004-07-20 2006-07-28 유양산전 주식회사 Apparatus for power supply control of an exposure type LED lamp
KR100970376B1 (en) * 2009-12-07 2010-07-15 엘아이지넥스원 주식회사 The voltage output circuit of modulator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100388226B1 (en) * 1998-03-30 2003-09-19 주식회사 하이닉스반도체 Input protection circuit in semiconductor integrated circuit
KR100387380B1 (en) * 2000-09-08 2003-06-19 박준호 Switching mode power supply with high efficiency
WO2006112601A1 (en) * 2005-02-22 2006-10-26 Oh Seok Kwon Golf training apparatus

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KR0185856B1 (en) 1999-05-15

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