The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 2010
Filed:
Aug. 06, 2007
Shinichi Kojima, Osaka, JP;
Shinichi Kojima, Osaka, JP;
Ricoh Company, Ltd., , JP;
Abstract
A synchronous rectification switching regulator, and a control circuit and a control method for controlling the synchronous rectification switching regulator. The regulator includes an output terminal, a first switching device, an inductor, a second switching device for synchronous rectification, a control circuit unit to control switching of the first switching device and cause the second switching device to perform switching opposite to that of the first switching device, and a reverse current detection circuit unit to detect a generation or an indication of a reverse current flowing from the output terminal to the second switching device and make the control circuit unit turn off the second switching device when a generation or an indication of the reverse current is detected. The reverse current detection circuit unit stops detecting a generation or an indication of the reverse current while the second switching device is turned off by the control circuit unit.