发明授权
US08687326B2 Short circuit protecting device and method thereof for DC-DC converter with soft-start function
有权
具有软启动功能的DC-DC转换器的短路保护装置及其方法
- 专利标题: Short circuit protecting device and method thereof for DC-DC converter with soft-start function
- 专利标题(中): 具有软启动功能的DC-DC转换器的短路保护装置及其方法
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申请号: US12831070申请日: 2010-07-06
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公开(公告)号: US08687326B2公开(公告)日: 2014-04-01
- 发明人: Zhao-Long Dong , Ching-Ji Liang
- 申请人: Zhao-Long Dong , Ching-Ji Liang
- 申请人地址: SG Singapore
- 专利权人: ASUS Technology Pte Ltd.
- 当前专利权人: ASUS Technology Pte Ltd.
- 当前专利权人地址: SG Singapore
- 代理机构: Jianq Chyun IP Office
- 优先权: TW98123637A 20090713
- 主分类号: H02H7/00
- IPC分类号: H02H7/00
摘要:
The invention discloses a short circuit protecting device adapted to a DC-DC converter with a soft-start function, and a voltage output terminal of the DC-DC converter increases an output current in segments in multiple time periods after the DC-DC converter is started. The short circuit protecting device including a voltage sensor connected to the voltage output terminal to sense the output voltage; a start timer generating a enable signal in a predetermined period after the DC-DC converter is started; a comparison circuit connected to the voltage sensor and the start timer and comparing the output voltage with a predetermined voltage according to the enable signal. The sum of the time period is a startup time of the DC-DC converter, and the startup time is longer than the predetermined period. When the output voltage is smaller than the predetermined voltage, a comparison circuit outputs a control signal to stop the DC-DC converter.
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