发明授权
US08576586B2 Dynamic drive of switching transistor of switching power converter
有权
开关电源转换器开关晶体管的动态驱动
- 专利标题: Dynamic drive of switching transistor of switching power converter
- 专利标题(中): 开关电源转换器开关晶体管的动态驱动
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申请号: US12678690申请日: 2007-09-28
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公开(公告)号: US08576586B2公开(公告)日: 2013-11-05
- 发明人: Junjie Zheng , Jun Zheng , Andrew Kwok-Cheung Lee , John William Kesterson , Allan Ming-Lun Lin , Hien Huu Bui , Carrie Seim , Yong Li
- 申请人: Junjie Zheng , Jun Zheng , Andrew Kwok-Cheung Lee , John William Kesterson , Allan Ming-Lun Lin , Hien Huu Bui , Carrie Seim , Yong Li
- 申请人地址: US CA Campbell
- 专利权人: iWatt Inc.
- 当前专利权人: iWatt Inc.
- 当前专利权人地址: US CA Campbell
- 代理机构: Fenwick & West LLP
- 国际申请: PCT/CN2007/002846 WO 20070928
- 国际公布: WO2009/039684 WO 20090402
- 主分类号: H02M3/335
- IPC分类号: H02M3/335 ; H02M3/337 ; H02M3/338
摘要:
A switching power converter comprises a transformer (110), a switch (108) coupled to the transformer (110), and a switch controller (200) coupled to the switch (108) for generating a switch drive signal (207) to turn on or off the switch (108). The drive current of the switch drive signal (207) is adjusted dynamically according to line or load conditions within a switching cycle and/or over a plurality of switching cycles. The magnitude of the drive current can be dynamically adjusted within a switching cycle and/or over a plurality of switching cycles, in addition to the pulse widths or pulse frequencies of the drive current.