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:
Jan. 19, 2010
Filed:
Mar. 12, 2007
Shohtaroh Sohma, Osaka, JP;
Shohtaroh Sohma, Osaka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A switching regulator including an inductor and a switching transistor and having a normal operational mode and a light-load operational mode is disclosed. The switching regulator includes an operational mode switching part configured to switch the normal operational mode and the light-load operational mode, and a light-load detection part configured to detect the light-load state of a load. The light-load detection part is configured to detect the light-load state of the load by a change in the voltage at the connection of the switching transistor and the inductor when the switching transistor is OFF. The operational mode switching part is configured to switch the normal operational mode to the light-load operational mode in response to the detection of the light-load state of the load by the light-load detection part.