- 专利标题： Control circuit for synchronous rectifier and the method thereof
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申请号： US16022645申请日： 2018-06-28
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公开(公告)号： US10432104B2公开(公告)日： 2019-10-01
- 发明人: Hui Li , Lei Miao , Siran Wang , Lin Feng
- 申请人： Chengdu Monolithic Power Systems Co., Ltd.
- 申请人地址： CN Chengdu
- 专利权人： Chengdu Monolithic Power Systems Co., Ltd.
- 当前专利权人： Chengdu Monolithic Power Systems Co., Ltd.
- 当前专利权人地址： CN Chengdu
- 代理机构： Perkins Coie LLP
- 优先权： CN201710561412 20170711
- 主分类号： H02M3/335
- IPC分类号： H02M3/335 ; H02M1/08
摘要：
A synchronous switching converter with an energy storage component and a synchronous rectifier coupled to the energy storage component, having: a secondary control circuit configured to receive a slew rate threshold adjusting signal and a voltage across the synchronous rectifier, and to provide a secondary control signal; wherein the secondary control circuit detects a slew rate of the voltage across the synchronous rectifier, and maintains the synchronous rectifier being off when the slew rate of the voltage across the synchronous rectifier is lower than a slew rate threshold.