发明名称 |
SWITCHING POWER SUPPLY DEVICE, SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE AND POWER SUPPLY DEVICE |
摘要 |
A switching power supply device performs a stable operation with fast response for a semiconductor integrated circuit device. A capacitor is provided between the output side of an inductor and a ground potential. A first power MOSFET supplies an electric current from an input voltage to the input side of the inductor. A second power MOSFET turned on when the first power MOSFET is off allows the input side of the inductor to be of a predetermined potential. A first feedback signal corresponding to an output voltage obtained from the output side of the inductor and a second feedback signal corresponding to an electric current flowed to the first power MOSFET are used to form a PWM signal. The first power MOSFET has plural cells of a vertical type MOS-construction.
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申请公布号 |
US2011062927(A1) |
申请公布日期 |
2011.03.17 |
申请号 |
US20100950222 |
申请日期 |
2010.11.19 |
申请人 |
RENESAS TECHNOLOGY CORPORATION |
发明人 |
NAGASAWA TOSHIO;KUDO RYOTARO |
分类号 |
G05F1/00 |
主分类号 |
G05F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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