发明授权
- 专利标题： Droop circuits and multi-phase DC-DC converters
- 专利标题（中）： 下垂电路和多相DC-DC转换器
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申请号： US12081668申请日： 2008-04-18
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公开(公告)号： US07928704B2公开(公告)日： 2011-04-19
- 发明人: Hua-Chiang Huang
- 申请人： Hua-Chiang Huang
- 申请人地址： TW Taipei
- 专利权人： UPI Semiconductor Corporation
- 当前专利权人： UPI Semiconductor Corporation
- 当前专利权人地址： TW Taipei
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 主分类号： G05F1/59
- IPC分类号： G05F1/59
摘要：
A droop circuit of a DC-DC converter is provided, wherein the DC-DC converter includes an output inductor coupled between an output of the DC-DC converter and a phase node for providing an output voltage. A current sense device is coupled between the phase node and the output of the DC-DC converter, includes an inductor coupled to the phase node and senses a current from the phase node. A first resistor is coupled to the current sense device. An amplifier circuit includes an amplifier having an inverting input, a non-inverting input coupled to the first resistor and an output directly connected to the inverting input, and a second resistor coupled between the inverting input and the output of the DC-DC converter. The amplifier circuit provides a droop current according to the second resistor and a voltage difference between the non-inverting input and the output of the DC-DC converter, and the voltage difference is related to the current.
公开/授权文献
- US20090051334A1 Droop circuits and multi-phase DC-DC converters 公开/授权日：2009-02-26
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