- 专利标题: SOFT SHUTDOWN MODULAR CIRCUITRY FOR POWER SEMICONDUCTOR SWITCHES
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申请号: US16019345申请日: 2018-06-26
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公开(公告)号: US20180309433A1公开(公告)日: 2018-10-25
- 发明人: Andreas Volke , Karsten Fink
- 申请人: Power Integrations Switzerland GmbH
- 优先权: EP16164054.5 20160406
- 主分类号: H03K17/081
- IPC分类号: H03K17/081 ; H03K17/082 ; H03K17/16 ; H02M1/088
摘要:
Circuitry for soft shutdown of a power switch and a power converters that includes circuitry for soft shutdown are described. In one aspect, circuitry for soft shutdown of a power switch includes a sense input to be coupled to a power switch receive a signal representative of current passing through the power switch, a comparator to compare the signal with an overcurrent threshold indicative of an overcurrent condition of the power switch and to output a triggering signal in response to the comparison indicating the overcurrent condition, and a gating transistor to be coupled to a control terminal of the power switch, the gating transistor configured to divert a portion of a drive signal away from the control terminal of the power switch in response to the triggering signal.
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