发明名称 |
AC active clamp for isolated power factor corrector and method of operating the same |
摘要 |
An AC active clamp, a method of operating the same and a power factor corrector employing the AC active clamp or the method. The power factor corrector has a primary switching circuit coupled to a primary winding of an isolation transformer and a rectifier coupled to a secondary winding of the isolation transformer. The primary switching circuit has first and second power switches configured to receive unrectified AC power. In one embodiment, the AC active clamp includes a switching circuit having first and second clamping switches series coupled in opposition and a capacitor coupled to the switching circuit. The switching circuit and the capacitor are coupled across at least a portion of the primary winding and are configured to mitigate adverse effects of a reverse recovery phenomenon associated with the rectifier and to effect substantially zero voltage switching of the first and second power switches of the primary switching circuit.
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申请公布号 |
US6272027(B1) |
申请公布日期 |
2001.08.07 |
申请号 |
US20000627677 |
申请日期 |
2000.07.28 |
申请人 |
FRAIDLIN SIMON;POLIKARPOV ANATOLIY |
发明人 |
FRAIDLIN SIMON;POLIKARPOV ANATOLIY |
分类号 |
H02M1/00;H02M1/34;H02M1/42;(IPC1-7):H02M3/335;G05F1/10 |
主分类号 |
H02M1/00 |
代理机构 |
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主权项 |
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地址 |
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