发明授权
- 专利标题： Semiconductor circuit and switching power supply apparatus
- 专利标题（中）： 半导体电路和开关电源装置
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申请号： US12138133申请日： 2008-06-12
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公开(公告)号： US07737672B2公开(公告)日： 2010-06-15
- 发明人: Ryotaro Kudo
- 申请人： Ryotaro Kudo
- 申请人地址： JP Tokyo
- 专利权人： Renesas Technology Corp.
- 当前专利权人： Renesas Technology Corp.
- 当前专利权人地址： JP Tokyo
- 代理机构： Mattingly & Malur, P.C.
- 优先权： JP2007-206074 20070808
- 主分类号： G05F1/00
- IPC分类号： G05F1/00
摘要：
To provide a power supply apparatus which realizes a high-speed response, a stable operation, and a low output ripple with low power consumption. The first stage switching regulator receives an input voltage and forms a first voltage. The second stage switching regulator receives the first voltage and forms a second voltage. The second stage switching regulator includes an N-phase (N is two or more) switching regulator, and the first voltage is set to be N times a target value of the second voltage. The input voltage is set to be higher than the first voltage.
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