发明授权
US08022682B2 Method to reduce inrush voltage and current in a switching power converter
有权
降低开关电源转换器浪涌电压和电流的方法
- 专利标题: Method to reduce inrush voltage and current in a switching power converter
- 专利标题(中): 降低开关电源转换器浪涌电压和电流的方法
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申请号: US11741070申请日: 2007-04-27
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公开(公告)号: US08022682B2公开(公告)日: 2011-09-20
- 发明人: Jun Honda , Xiao-chang Cheng
- 申请人: Jun Honda , Xiao-chang Cheng
- 申请人地址: US CA El Segundo
- 专利权人: International Rectifier Corporation
- 当前专利权人: International Rectifier Corporation
- 当前专利权人地址: US CA El Segundo
- 代理机构: Farajami & Farajami LLP
- 主分类号: G05F1/00
- IPC分类号: G05F1/00
摘要:
A circuit for minimizing voltage inrush upon startup in a switching power converter having a switching stage including high and low switches connected at a common node, a feedback loop for maintaining a target output voltage, an output capacitor connected between an output node and the ground, an inductor connected between the common node and the output node, and a control circuit having a first error amplifier for providing a first signal based on a comparison of a reference voltage and voltage provided by the feedback loop, the control circuit including a level switch connected between the ground and the common node, the level switch being controlled in accordance with the first signal, wherein a large inrush current flowing into the output capacitor when the circuit is starting up is minimized.
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