发明授权
- 专利标题: Isolated switched mode power supply
- 专利标题(中): 隔离开关电源
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申请号: US13820329申请日: 2010-09-02
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公开(公告)号: US09124190B2公开(公告)日: 2015-09-01
- 发明人: Magnus Karlsson , Jonas Malmberg , Oscar Persson
- 申请人: Magnus Karlsson , Jonas Malmberg , Oscar Persson
- 申请人地址: SE Stockholm
- 专利权人: Telefonaktiebolaget L M Ericsson (publ)
- 当前专利权人: Telefonaktiebolaget L M Ericsson (publ)
- 当前专利权人地址: SE Stockholm
- 国际申请: PCT/EP2010/062874 WO 20100902
- 国际公布: WO2012/028189 WO 20120308
- 主分类号: H02M3/335
- IPC分类号: H02M3/335 ; H02M3/156 ; H02M1/00
摘要:
An isolated switched mode power supply comprises a transformer, with primary and secondary windings, and a rectification network connected to the secondary winding. The rectification network and the transformer are arranged such that, during a free-wheeling period of operation of the switched mode power supply, a magnetic flux from a first portion of a secondary winding of the transformer substantially cancels a magnetic flux from a second portion of the secondary winding between the first and second portions of the secondary winding. Additionally, a secondary side circuit connected to the secondary winding comprises a switching device, which is connected to a center-tap, provided between the first and second portions of the secondary winding, and an output of the rectification network so as to conduct at least a part of a free-wheeling current flowing in the secondary side circuit during the free-wheeling period.
公开/授权文献
- US20130155727A1 ISOLATED SWITCHED MODE POWER SUPPLY 公开/授权日:2013-06-20