发明授权
US06169671A Snubber circuit for a power switch and recitifying diode and power converter employing the same
有权
用于电源开关和再利用二极管的缓冲电路和采用该二极管的功率转换器
- 专利标题： Snubber circuit for a power switch and recitifying diode and power converter employing the same
- 专利标题（中）： 用于电源开关和再利用二极管的缓冲电路和采用该二极管的功率转换器
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申请号： US09553939申请日： 2000-04-21
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公开(公告)号： US06169671A公开(公告)日： 2001-01-02
- 发明人: Hengchun Mao
- 申请人： Hengchun Mao
- 主分类号： H02H7125
- IPC分类号： H02H7125
摘要：
For use in a power converter having a power switch subject to switching losses and a rectifying diode subject to a reverse recovery condition, a snubber circuit and related method to mitigate adverse effects associated with the switching losses and the reverse recovery condition. In one embodiment, the snubber circuit includes a recovery circuit, having first and second energy storage devices and a snubber diode, coupled to the rectifying diode. The snubber circuit further includes a third energy storage device, coupled across the rectifying diode, configured to cooperate with the recovery circuit to mitigate adverse effects associated with the reverse recovery condition and reduce a rate of change of a voltage across the power switch to reduce the switching losses.