KR980006749A - A power supply - Google Patents
A power supply Download PDFInfo
- Publication number
- KR980006749A KR980006749A KR1019960021454A KR19960021454A KR980006749A KR 980006749 A KR980006749 A KR 980006749A KR 1019960021454 A KR1019960021454 A KR 1019960021454A KR 19960021454 A KR19960021454 A KR 19960021454A KR 980006749 A KR980006749 A KR 980006749A
- Authority
- KR
- South Korea
- Prior art keywords
- primary winding
- voltage
- power supply
- transformer
- power transistor
- Prior art date
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- Dc-Dc Converters (AREA)
Abstract
본 발명은 전원 공급 장치에 관한 것으로 퓨우즈를 통해 인가된 상용교류 전압을 직류 전압으로 변환하는 직류 전원 공급부(10)와 ; 온/오프스위칭 동작을 하는 파워 트랜지스터(20) ; 및 입력된 피드백 전압(Vfb)에 따라 상기 파워 트랜지스터(20)의 동작을 PWM 제어하는 제어 IC(30)가 구비되어진 전원 공급 장치에 있어서, 2차측 제1권선(L2)이 1차측 권선(L1)과 동일한 방향으로 코일이 감겨져 있는 구조로 되어 있으며, 다수개의 2차측 제 2권선(L2′, L2″…)이 1차측 권선(L1)과 반대 방향으로 코일이 감겨져 있는 구조로 되어 있으며, 1차측 권선(L1) 양단이 각각 상기 직류 전원 공급부(10)와 파워 트랜지스터(20)에 연결되어 있는 변압기(40) ; 및 상기 변압기(40)의 2차측 권선(L2,L2′,L2″…)으로부터 각각 유기된 전압을 인가받아 직류 전압으로 변환 출력하는 출력부(50)을 포함하여 구성되어 있어, 상기 파워 트랜지스터(30)의 턴오프시, 상기 포워드 컨버터(20)의 1차측 권선과 2차측 권선 사이에 축적된 에너지를 이용하여 상기 변압기()의 1차측 권선을 통해 2차측 제2권선에서 전압을 유기함으로써, 상기 에너지를 전원 전압으로 사용한다는 데 그 효과가 있다.The present invention relates to a power supply device comprising: a DC power supply unit 10 for converting a commercial AC voltage applied through a fuse into a DC voltage; A power transistor 20 for performing on / off switching operation; And a control IC 30 for PWM controlling the operation of the power transistor 20 according to the input feedback voltage V fb , wherein the secondary side primary winding L2 is a primary winding ( The coil is wound in the same direction as L1), and the plurality of secondary windings L2 ', L2 ″ are wound in the opposite direction to the primary winding L1. A transformer 40 having both ends of the primary winding L1 connected to the DC power supply 10 and the power transistor 20, respectively; And an output unit 50 which receives the induced voltages from the secondary windings L2, L2 ', and L2 ″ of the transformer 40, respectively, and outputs the converted voltages to DC voltages. At the turn-off of 30), by using the energy accumulated between the primary winding and the secondary winding of the forward converter 20, by inducing a voltage in the secondary winding through the primary winding of the transformer (), The effect is that the energy is used as the power supply voltage.
Description
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.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960021454A KR980006749A (en) | 1996-06-14 | 1996-06-14 | A power supply |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960021454A KR980006749A (en) | 1996-06-14 | 1996-06-14 | A power supply |
Publications (1)
Publication Number | Publication Date |
---|---|
KR980006749A true KR980006749A (en) | 1998-03-30 |
Family
ID=66287896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960021454A KR980006749A (en) | 1996-06-14 | 1996-06-14 | A power supply |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR980006749A (en) |
-
1996
- 1996-06-14 KR KR1019960021454A patent/KR980006749A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid |