发明名称 |
Synchronous rectification switching regulator, control circuit thereof, and method of controlling the operation thereof |
摘要 |
A synchronous-rectification-type switching regulator is disclosed that includes a first switching element; an inductor charged with a voltage input to an input terminal of the switching regulator by the switching of the first switching element; a second switching element for synchronous rectification performing switching so as to discharge the inductor; a control circuit part controlling the switching of the first switching element so that an output voltage from an output terminal of the switching regulator is a predetermined constant voltage, and to cause the second switching element to perform the switching inversely to the first switching element; and a reverse current prevention circuit part interrupting a current that flows into the second switching element by cutting off the connection of the second switching element so as to prevent generation of a reverse current that flows in the direction of the second switching element from the output terminal.
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申请公布号 |
US7990121(B2) |
申请公布日期 |
2011.08.02 |
申请号 |
US20060794702 |
申请日期 |
2006.11.09 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
KOJIMA SHINICHI;UENO TOHRU |
分类号 |
G05F1/40;G05F1/56 |
主分类号 |
G05F1/40 |
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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