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KR970004252A - Switching power supply - Google Patents

Switching power supply Download PDF

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Publication number
KR970004252A
KR970004252A KR1019960009949A KR19960009949A KR970004252A KR 970004252 A KR970004252 A KR 970004252A KR 1019960009949 A KR1019960009949 A KR 1019960009949A KR 19960009949 A KR19960009949 A KR 19960009949A KR 970004252 A KR970004252 A KR 970004252A
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South Korea
Prior art keywords
circuit
horizontal synchronizing
synchronizing signal
sawtooth wave
pulse
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KR1019960009949A
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Korean (ko)
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KR100225311B1 (en
Inventor
이명준
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고타니 고우이찌
산켄 뎅끼 가부시끼가이샤
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Publication of KR970004252A publication Critical patent/KR970004252A/en
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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
    • H02M3/00Conversion of DC power input into DC power output
    • H02M3/22Conversion of DC power input into DC power output with intermediate conversion into AC
    • H02M3/24Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
    • H02M3/28Conversion 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Television Receiver Circuits (AREA)
  • Power Conversion In General (AREA)

Abstract

표시 장치를 갖는 컴퓨터 시스템의 스위칭 전원 장치의 대기상태에 있어서 전원손실의 감소 및 잡음 제거를 용이하게 달성한다. 직류 전압을 스위칭 트랜지스터(7)로 ONㆍOFF하여, 출력 트랜스(5)를 통해 주회로(30)및 부회로(34)에 전력을 공급하는 스위칭 전원 장치에 있어서, 주회로(30)를 정상적으로 구동할 때에는 수평동기 신호와 동일한 주파수로 스위칭 트랜지스터(7)를 ONㆍOFF한다. 대기시에는 수평 동기 신호보다도 낮은 주파수로 스위칭 트랜지스터(7)를 ONㆍOFF한다.The power loss and the noise can be easily reduced in the standby state of the switching power supply unit of the computer system having the display device. A switching power supply device for turning on and off a DC voltage by a switching transistor and supplying power to a main circuit (30) and a sub circuit (34) via an output transformer (5) The switching transistor 7 is turned on and off at the same frequency as the horizontal synchronizing signal. The switching transistor 7 is turned on and off at a frequency lower than the horizontal synchronizing signal.

Description

스위칭형 전원 장치Switching power supply

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 실시예의 스위칭형 전원 장치를 도시한 회로도이다. 제2도는 제1도의 전압제어 신호형성 회로를 상세히 도시한 회로도이다. 제3도는 제1도의 PWM 펄스 발생 회로와 그것의 출력단을 도시한 회로도이다.FIG. 1 is a circuit diagram showing a switching type power supply device of an embodiment. Fig. 2 is a circuit diagram showing in detail the voltage control signal generating circuit of Fig. 1. Fig. FIG. 3 is a circuit diagram showing a PWM pulse generating circuit and its output stage in FIG. 1; FIG.

Claims (4)

표시 장치를 구성하기 위한 수평 동기 신호 발생 회로(29a)를 포함하고 있는 주회로(30)와, 주회로(30)보다 소비 전력이 적은 부회로(34)에 전력을 공급하기 위한 전원 장치에 있었어, 직류 전원(2)의 일측단(3) 및 타측단(4) 사이에 접속된 트랜스(5)의 1차 권선(6)과 제어 단자를 갖는 스위칭 소자(7)의 직렬회로와, 상기 1차 권선(6)에 자기결합된 제1의 출력 권선(8)과, 상기 1차 권선(6)에 자기결합된 제2의 출력 권선(9)과, 상기 제1의 출력 권선(8)과 상기 주회로(30) 사이에 접속된 제1의 정류 평활 회로(26)와, 상기 제2의 출력 권선(9)과 상기 부회로(34) 사이에 접속된 제2의 정류 평활 회로(33)와, 상기 주회로(30)의 구동 상태와 비구동 상태를 선택적으로 얻기 위한 제어수단(34,42)과, 상기 제1의 정류 평활 회로(26)의 출력 전압을 일정하게 하기 위한 전압제어 신호를 형성하는 전압제어 신호형성 수단(50)과, 상기 전압제어 신호형성 회로(50)와 상기 수평동기 신호 발생 회로(29a)에 결합되어, 상기 수평 동기 신호 발생 회로(29a)로부터 수평 동기 신호가 발생되고 있을 때에는 그 수평 동기 신호와 동일한 주파수를 갖는 동시에 상기 제1의 정류 평활 회로(26)의 출력 전압을 일정치로 제어하기 위한 펄스폭을 갖는 제1의 펄스열을 형성하고, 상기 제1의 펄스열에 의해 상기 스위칭 소자(7)를 ONㆍOFF로 제어하고, 상기 수평 동기 신호 발생 회로(29a)로부터 수평 동기 신호가 발생하고 있지 않을 때에는, 상기 수평 동기 신호보다도 낮은 주파수를 가짐과 동시에 상기 제1의 정류 평활 회로(26)의 출력 전압을 상기 일정치로 제어하기 위한 펄스폭을 가지는 제2의 펄스열을 형성하고, 이 제2의 펄스열에 의해 상기 스위칭 소자(7)를 ONㆍOFF로 제어하는 펄스 발생 회로(13)를 포함하는 것을 특징으로 하는 전원 장치.A main circuit 30 including a horizontal synchronizing signal generating circuit 29a for constituting a display device and a power supply for supplying electric power to the sub circuit 34 which consumes less power than the main circuit 30 A series circuit of a switching element 7 having a primary winding 6 and a control terminal of a transformer 5 connected between one end 3 and the other end 4 of the DC power supply 2, A first output winding 8 magnetically coupled to the secondary winding 6, a second output winding 9 magnetically coupled to the primary winding 6, a first output winding 8 connected to the first output winding 8, A first rectifying smoothing circuit 26 connected between the main circuit 30 and a second rectifying smoothing circuit 33 connected between the second output coil 9 and the sub circuit 34, Control means (34, 42) for selectively obtaining a driving state and a non-driving state of the main circuit (30), and a voltage control signal for constantly setting the output voltage of the first rectifying smoothing circuit Type A horizontal synchronizing signal generating circuit 29a is connected to the voltage control signal generating circuit 50 and the voltage control signal generating circuit 50 and the horizontal synchronizing signal generating circuit 29a, A first pulse train having the same frequency as that of the horizontal synchronizing signal and having a pulse width for controlling the output voltage of the first rectifying smoothing circuit to a constant value is formed, When the horizontal synchronizing signal is not generated from the horizontal synchronizing signal generating circuit (29a), the switching element (7) is turned ON / A second pulse train having a pulse width for controlling the output voltage of the rectifying smoothing circuit 26 to the constant value is formed and the switching element 7 is turned on and off by the second pulse train And a pulse generating circuit (13) for controlling the pulse generating circuit (13). 제1항에 있어서, 상기 펄스 발생 회로(13)는, 상기 주회로(30)로부터 수평 동기 신호가 정상적으로 발생 하고 있을 때에는, 상기 수평 동기 신호에 응답하여, 상기 수평 동기 신호와 동일한 주파수를 갖는 제1주파수에서 제1톱니파를 발생하고, 상기 수평 동기 신호가 발생하지 않는 때에는, 상기 수평 동기 신호의 주파수보다도 낮은 제2의 주파수로 제2의 톱니파를 발생하는 톱니파 발생회로(56)와, 상기 전압 제어 신호에 응답하여, 상기 제1의 정류 평활 회로(26)의 출력 전압을 일정치로 제어하기 위한 참조 신호를 발생하는 참조 신호 발생 수단(57)과, 상기 톱니파 발생 회로(56)와 상기 참조 신호 발생 수단(57)과 상기 스위칭 소자(7)의 제어단자에 접속되며, 상기 제1의 톱니파가 발생하고 있을 때에는 상기 제1의 톱니파와 상기 참조 신호와의 비교에 근거하여 상기 수평 동기 신호파 동일한 주파수를 갖는 상기 제1의 펄스열을 형성하고, 상기 제2의 톱니파가 발생하고 있을 때에는 상기 제2의 톱니파와 상기 참조 신호와의 비교에 근거하여 상기 수평 동기 신호보다도 낮은 주파수를 갖는 상기 제2의 펄스열을 형성하여, 상기 스위칭 소자(7)의 상기 제어 단자에 공급하는 비교기(55)로 구성되는 것을 특징으로 하는 전원 장치.2. The image pickup apparatus according to claim 1, wherein, when the horizontal synchronizing signal is normally generated from the main circuit (30), the pulse generating circuit (13) generates, in response to the horizontal synchronizing signal, A sawtooth wave generating circuit (56) for generating a first sawtooth wave at a first frequency and generating a second sawtooth wave at a second frequency lower than the frequency of the horizontal synchronizing signal when the horizontal sync signal is not generated, Reference signal generating means 57 for generating a reference signal for controlling the output voltage of the first rectifying smoothing circuit 26 to a constant value in response to a control signal, (57) and a control terminal of the switching element (7), and when the first sawtooth wave is generated, the first sawtooth wave is generated based on a comparison between the first sawtooth wave and the reference signal Wherein the second sawtooth wave is generated at a frequency lower than the horizontal synchronizing signal based on a comparison between the second sawtooth wave and the reference signal when the first sawtooth wave is generated, And a comparator (55) for forming said second pulse string having said first pulse string and said second pulse string, and supplying said second pulse string to said control terminal of said switching element (7). 제1항 또는 제2항에 있어서, 상기 부회로(34)는 마이크로컴퓨터를 포함한 제어 회로인 것을 특징으로 하는 전원 장치.The power supply device according to claim 1 or 2, wherein the sub-circuit (34) is a control circuit including a microcomputer. 제1항 또는 제2항에 있어서, 상기 부회로는 텔레비전 수상기의 리모트컨트롤 회로인 것을 특징으로 하는 전원 장치.The power supply device according to claim 1 or 2, wherein the sub circuit is a remote control circuit of a television receiver. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960009949A 1995-06-21 1996-04-03 Switched power supplies Expired - Fee Related KR100225311B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1995-178235 1995-06-21
JP7178235A JPH099174A (en) 1995-06-21 1995-06-21 Switching type power supply device

Publications (2)

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KR970004252A true KR970004252A (en) 1997-01-29
KR100225311B1 KR100225311B1 (en) 1999-10-15

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0875983B1 (en) * 1997-04-30 2004-09-15 Fidelix Y.K. A power supply apparatus
JP2000116027A (en) * 1998-03-10 2000-04-21 Fiderikkusu:Kk Power supply device
KR100603421B1 (en) 1999-08-24 2006-07-20 페어차일드코리아반도체 주식회사 Switched-Mode Power Supplies with Burst Mode Using Error Amplifiers
KR100586988B1 (en) 2004-08-09 2006-06-08 삼성전자주식회사 Electronics
JP5980107B2 (en) * 2012-12-03 2016-08-31 三菱電機株式会社 Power supply device and lighting device
CN115118137A (en) * 2022-06-29 2022-09-27 北京润科通用技术有限公司 Pulse distribution device and method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3602858A1 (en) * 1986-01-31 1987-08-06 Thomson Brandt Gmbh SWITCHING POWER SUPPLY FOR TELEVISIONS
DE3641303A1 (en) * 1986-12-03 1988-06-16 Thomson Brandt Gmbh TELEVISION RECEIVER WITH A MICROPROCESSOR CONTROLLED CONTROL PANEL AND WITH A SWITCHING POWER SUPPLY
FR2607991B1 (en) * 1986-12-05 1989-02-03 Radiotechnique Ind & Comm CUT-OUT POWER SUPPLY FOR A TELEVISION EQUIPPED WITH A STAND-BY SYSTEM
FI113507B (en) * 1989-03-07 2004-04-30 Rca Licensing Corp A burst mode sleeper power supply with sleep mode
JPH0680385B2 (en) * 1989-11-14 1994-10-12 三洋電機株式会社 Showcase
JP2902051B2 (en) * 1990-05-23 1999-06-07 シャープ株式会社 Switching regulator for low output
DE4021940A1 (en) * 1990-07-10 1992-01-16 Thomson Brandt Gmbh SWITCHING POWER SUPPLY FOR A TELEVISION RECEIVER
JP3281393B2 (en) * 1991-09-13 2002-05-13 ソニー株式会社 Switching power supply

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JPH099174A (en) 1997-01-10
KR100225311B1 (en) 1999-10-15

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