发明名称 |
CONTROL OF A SYNCHRONOUS RECTIFIER |
摘要 |
A method and a control unit for changing a working mode of a synchronous rectifier. The synchronous rectifier comprises at least one controllable switch having a diode in parallell thereof. The synchronous rectifier is operatively connected to a reactive circuit, and is arranged to receive at least one control signal at a control terminal, for controlling at least one controllable switch. The at least one control signal is pulse-width modulated with a defined duty-cycle. The method comprises adjusting the pulse-width of the at least one control signal between zero percent duty-cycle and the defined duty-cycle at a frequency above a cut-off frequency of the reactive circuit. Thereby, reducing the effect of a forward voltage drop over said diode in the synchronous rectifier. |
申请公布号 |
EP2878073(A4) |
申请公布日期 |
2016.04.20 |
申请号 |
EP20120881723 |
申请日期 |
2012.07.27 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
发明人 |
PERSSON, OSCAR;KARLSSON, MAGNUS;YANG, XUEFENG |
分类号 |
H02M3/335;H02M1/36;H02M3/158;H02M3/28 |
主分类号 |
H02M3/335 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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