发明授权
- 专利标题: Proportional bias switch driver circuit with current transformer
- 专利标题(中): 比例偏置开关驱动电路与电流互感器
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申请号: US13336136申请日: 2011-12-23
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公开(公告)号: US08981819B2公开(公告)日: 2015-03-17
- 发明人: Richard A Dunipace
- 申请人: Richard A Dunipace
- 申请人地址: US CA San Jose
- 专利权人: Fairchild Semiconductor Corporation
- 当前专利权人: Fairchild Semiconductor Corporation
- 当前专利权人地址: US CA San Jose
- 代理机构: Grossman Tucker Perreault & Pfleger LLC
- 主分类号: H03K3/00
- IPC分类号: H03K3/00
摘要:
A switch bias system is provided that includes a bipolar junction transistor (BJT) switch comprising a base, emitter, and collector; an energy storage circuit coupled to the collector of the BJT, the energy storage circuit supplying current flow to the collector of the BJT; a current transformer circuit coupled to the emitter, the current transformer circuit configured to sense current flow through the emitter of the BJT switch; and a proportional bias circuit configured to generate a bias current to the base of the BJT switch, the bias current set to a proportion of the sensed current flow through the emitter of the BJT switch.
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