发明授权
- 专利标题: Flyback DC/DC converter using clamp diode
- 专利标题(中): 使用钳位二极管的反激式DC / DC转换器
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申请号: US11565549申请日: 2006-11-30
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公开(公告)号: US07505289B2公开(公告)日: 2009-03-17
- 发明人: Don Sik Kim , Sug Chin Sakong , Sung Soo Hong , Chung Wook Roh , Sang Kyoo Han , Young Seung Roh , Kwang Seung Cho
- 申请人: Don Sik Kim , Sug Chin Sakong , Sung Soo Hong , Chung Wook Roh , Sang Kyoo Han , Young Seung Roh , Kwang Seung Cho
- 申请人地址: KR Suwon, Kyungki-Do
- 专利权人: Samsung Electro-Mechanics Co., Ltd.
- 当前专利权人: Samsung Electro-Mechanics Co., Ltd.
- 当前专利权人地址: KR Suwon, Kyungki-Do
- 代理机构: Lowe Hauptman Ham & Berner
- 优先权: KR10-2006-0010868 20060203
- 主分类号: H02H7/125
- IPC分类号: H02H7/125 ; H02M3/335
摘要:
Provided is a flyback DC/DC converter for a power supply. In the flyback DC/DC converter, a flyback driver unit provides a primary current. A transformer includes a plurality of secondary coils for inducing energy from the primary coil receiving the primary current. A rectifier unit includes a plurality of rectifier diodes for rectifying secondary currents of the corresponding secondary coils of the transformer. A plurality of clamp diodes are connected in series to the corresponding rectifier diodes of the rectifier unit in a forward direction to clamp ringing voltage across the corresponding rectifier diodes when the power switch is turned off. Accordingly, the voltage across the rectifier diode on the secondary side can be reduced such that it is lower than the output voltage. Also, it is possible to remove the ringing voltage of the rectifier diode and to enhance the efficiency of the flyback DC/DC converter.
公开/授权文献
- US20070183172A1 FLYBACK DC/DC CONVERTER USING CLAMP DIODE 公开/授权日:2007-08-09