发明授权
- 专利标题： Active clamping circuit and power supply system using the same
- 专利标题（中）： 主动钳位电路和电源系统使用相同
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申请号： US10910339申请日： 2004-08-04
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公开(公告)号： US07078882B2公开(公告)日： 2006-07-18
- 发明人: Hsiang-Chung Weng , Kai-Fu Chen , Sheng-Chung Huang , Chih-Jung Lin
- 申请人： Hsiang-Chung Weng , Kai-Fu Chen , Sheng-Chung Huang , Chih-Jung Lin
- 申请人地址： TW Taipei
- 专利权人： Asustek Computer Inc.
- 当前专利权人： Asustek Computer Inc.
- 当前专利权人地址： TW Taipei
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 优先权： TW92126596A 20030926
- 主分类号： G05F1/40
- IPC分类号： G05F1/40
摘要：
An active clamping circuit. The active clamping circuit is applicable to a DC-to-DC conversion circuit, and has an output terminal to supply an output voltage to a load. In the active clamping circuit, a determining circuit is coupled to the DC-to-DC conversion circuit to determine the output detects the output voltage and to output a first enable signal when the output voltage is higher than a first predetermined voltage. A voltage adjustment circuit is coupled to the determining circuit to pull low the output voltage according to the first enable signal. An inductor has a first end coupled to the output terminal of the DC-to-DC conversion circuit, and a diode is coupled between the inductor and an input terminal of the DC-to-DC conversion circuit as a conductive path to channel discharge current to the input terminal of the DC-to-DC conversion circuit.