发明授权
- 专利标题: Step-down switching regulator with freewheeling diode
- 专利标题(中): 具有续流二极管的降压型开关稳压器
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申请号: US12148570申请日: 2008-04-21
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公开(公告)号: US08035364B2公开(公告)日: 2011-10-11
- 发明人: Richard K. Williams
- 申请人: Richard K. Williams
- 申请人地址: US CA Santa Clara
- 专利权人: Advanced Analogic Technologies, Inc.
- 当前专利权人: Advanced Analogic Technologies, Inc.
- 当前专利权人地址: US CA Santa Clara
- 代理机构: Patentability Associates
- 主分类号: G05F1/00
- IPC分类号: G05F1/00
摘要:
A freewheeling DC/DC step-down converter includes a high-side MOSFET, an inductor and an output capacitor connected between the input voltage and ground. A freewheeling clamp, which includes a freewheeling MOSFET and diode, is connected across the inductor. When the high-side MOSFET is turned off, a current circulates through the inductor and freewheeling clamp rather than to ground, improving the efficiency of the converter. The converter has softer diode recovery and less voltage overshoot and noise than conventional Buck converters and features unique benefits during light-load conditions.
公开/授权文献
- US20080291711A1 Step-down switching regulator with freewheeling diode 公开/授权日:2008-11-27