发明申请
- 专利标题: Phase Compensation Driving Scheme for Synchronous Rectifiers
- 专利标题(中): 同步整流器相位补偿驱动方案
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申请号: US11749405申请日: 2007-05-16
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公开(公告)号: US20080285312A1公开(公告)日: 2008-11-20
- 发明人: Dianbo Fu , Fred C. Lee
- 申请人: Dianbo Fu , Fred C. Lee
- 主分类号: H02M3/335
- IPC分类号: H02M3/335 ; H02M7/217
摘要:
Phase compensation of a voltage appearing on physical terminals of a synchronous rectifier switching element such as a MOSFET is used to substantially eliminate effects of package inductance of the synchronous rectifier and thus approximate the actual voltage across the circuit element providing synchronous rectification in, for example, a switching power converter. By doing so and using the phase compensated signal to control the synchronous rectifier, switching time may be more suitably controlled to improve efficiency of the synchronous rectifier by substantially eliminating body diode conduction and body diode reverse recovery effects.
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