FORWARD CONVERTER

申请公布号：JP2000152614(A)

申请号：JP19980320497

申请日期：1998.11.11

申请公布日期：2000.05.30

申请人：

NEC KOFU LTD

发明人：SHIMURA MASAKI

分类号：H02M3/28;H02M3/335;(IPC1-7):H02M3/28

主分类号：H02M3/28

摘要：PROBLEM TO BE SOLVED: To provide a forward converter which has simple construction and does not need a secondary side DC power supply. SOLUTION: A drive circuit which turns on a synchronous rectifying device 122 by the voltage of a self-wound wire 106b of a transformer 106, when a switching device 102 is in an on-state and a drive circuit which includes a holding circuit which holds the voltage of the self-wound wire 106b of the transformer 106 and turns on a flywheel synchronous rectifying device 123 over the whole off-period of the switching device 102 by the voltage of the self-wound 106b of the transformer 106, and the voltage held by the holding circuit are provided.

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