KR940012776A - Switching mode power supply start circuit - Google Patents
Switching mode power supply start circuit Download PDFInfo
- Publication number
- KR940012776A KR940012776A KR1019920021304A KR920021304A KR940012776A KR 940012776 A KR940012776 A KR 940012776A KR 1019920021304 A KR1019920021304 A KR 1019920021304A KR 920021304 A KR920021304 A KR 920021304A KR 940012776 A KR940012776 A KR 940012776A
- Authority
- KR
- South Korea
- Prior art keywords
- voltage
- winding
- auxiliary
- pulse width
- power supply
- Prior art date
Links
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- Dc-Dc Converters (AREA)
Abstract
스위칭 모드 파워 서플라이의 전력 손실을 줄이고 펄스폭 변조시 안정한 전압을 공급하여 전원장치의 효율을 개선하고 신뢰도를 높이는 회로에 관한 것이다. 변환수단에서 교류전압을 입력하여 직류전압으로 변환하고, 변압수단에서 제1권선에 유기되는 상기 직류전압을 제2권선으로 유기하여 부하전압을 발생하며 보조권선에 유기되는 상기 직류전압을 보조전압으로 발생하며, 펄스폭변조수단에서 상기 직류전압 혹은 상기 보조전압의 펄스폭을 변조하고, 스위칭수단에서 상기 펄스폭변조수단의 제어를 받아 상기 제1권선과 상기 보조권선의 전압 유기 시점이 서로 상반되도록 제어하되, 정전압수단이 상기 변환수단으로 부터 상기 변압수단으로 항상 일정한 정도의 직류전압이 공급되도록 제어하며, 차단수단은 상기 교류전압이 입력된 후 상기 보조전압이 발생될 때 까지만 상기 정전압을 상기 펄스폭변환 수단으로 전달하다.The present invention relates to a circuit for reducing power loss of a switching mode power supply and supplying a stable voltage during pulse width modulation to improve power supply efficiency and increase reliability. The converting means inputs an AC voltage to convert the DC voltage, and the transformer converts the DC voltage induced in the first winding into the second winding to generate a load voltage and converts the DC voltage induced in the auxiliary winding into the auxiliary voltage. And modulate the pulse width of the DC voltage or the auxiliary voltage in the pulse width modulating means, and under the control of the pulse width modulating means in the switching means so that the voltage induced time points of the first winding and the auxiliary winding are opposite to each other. The control unit controls the constant voltage means so that a constant DC voltage is always supplied from the converting means to the transformer means, and the blocking means pulses the constant voltage until the auxiliary voltage is generated after the AC voltage is input. Pass to width converting means
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제2도는 본 발명에 따른 스위칭 모드 파워 서플라이 기동회로도.2 is a switching mode power supply start circuit according to the present invention.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920021304A KR940012776A (en) | 1992-11-13 | 1992-11-13 | Switching mode power supply start circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920021304A KR940012776A (en) | 1992-11-13 | 1992-11-13 | Switching mode power supply start circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
KR940012776A true KR940012776A (en) | 1994-06-24 |
Family
ID=67210707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920021304A KR940012776A (en) | 1992-11-13 | 1992-11-13 | Switching mode power supply start circuit |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR940012776A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100685104B1 (en) * | 2005-07-21 | 2007-02-22 | 주식회사 케이이씨 | Switching Mode Power Supply |
-
1992
- 1992-11-13 KR KR1019920021304A patent/KR940012776A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100685104B1 (en) * | 2005-07-21 | 2007-02-22 | 주식회사 케이이씨 | Switching Mode Power Supply |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Withdrawal due to no request for examination |