发明授权
- 专利标题: Power converters with switched capacitor buck/boost
- 专利标题(中): 电源转换器带开关电容降压/升压
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申请号: US12317223申请日: 2008-12-19
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公开(公告)号: US07795761B2公开(公告)日: 2010-09-14
- 发明人: Steven Huynh , Matthew A. Grant , Lin Chen
- 申请人: Steven Huynh , Matthew A. Grant , Lin Chen
- 申请人地址: VG
- 专利权人: Active-Semi, Inc.
- 当前专利权人: Active-Semi, Inc.
- 当前专利权人地址: VG
- 代理机构: Imperium Patent Works
- 代理商 T. Lester Wallace; Joseph S. Spano
- 主分类号: H01H9/54
- IPC分类号: H01H9/54
摘要:
A power converter having a switched capacitor buck/boost operation has first and second switches coupled to a first switching node, third and fourth switches coupled to a second switching node, a capacitor coupled between the first and second switching nodes, and an inductor coupled to the first switching node. A switch controller controls the switches to operate in voltage step-down mode and voltage step-up mode depending on a difference between converter output voltage VOUT and converter input voltage VIN. In a buck-optimized topology operating in a step-down mode, an output current flowing through the first switching node flows through only one switch at a given time. In a boost-optimized topology operating in a step-up mode, an output current flowing through the first switching node flows through only one switch at a given time. As a result, a more compact and efficient power converter may be realized at lower cost.
公开/授权文献
- US20100156368A1 Power converters with switched capacitor buck/boost 公开/授权日:2010-06-24
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