发明名称 |
Voltage clamp circuit, a switching power supply device, a semiconductor integrated circuit device, and a voltage level conversion circuit |
摘要 |
A voltage clamping circuit which operates in a stable manner and a switching power source device which enables high-speed operation. In the switching power source device, one source/drain route is connected to an input terminal to which an input voltage is supplied, a predetermined voltage to be restricted is supplied to a gate, and using a MOSFET which provides a current source between another source/drain route and a ground potential of the circuit, a clamp output voltage which corresponds to the input voltage is obtained from another source/drain route. The switching power source device further includes a first switching element which controls a current in an inductor and a second switching element which clamps a reverse electromotive voltage generated in the inductor. The voltage clamping circuit is used in a feedback route for setting a dead time. |
申请公布号 |
US8638078(B2) |
申请公布日期 |
2014.01.28 |
申请号 |
US201213593368 |
申请日期 |
2012.08.23 |
申请人 |
KUDO RYOTARO;TATENO KOJI;RENESAS ELECTRONICS CORPORATION |
发明人 |
KUDO RYOTARO;TATENO KOJI |
分类号 |
G05F1/00;H02M7/538;H03K5/08;H03K19/0944 |
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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