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:
Feb. 17, 2009
Filed:
Feb. 01, 2007
Naohiko Morota, Osaka, JP;
Kazuhiro Murata, Osaka, JP;
Naohiko Morota, Osaka, JP;
Kazuhiro Murata, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A feedback circuit () generates an error amplification signal VEAO for stabilizing an output voltage Vo at the reference voltage. The reference voltage is set beforehand in the feedback circuit (). The peak value of drain current ID passing through a switching element () is controlled by the error amplification signal VEAO and the output voltage Vo is stabilized. Meanwhile, when a load () increases, a reference voltage variable circuit () increases the internal reference voltage of the feedback circuit () based on the error amplification signal VEAO, so that fluctuations in output voltage due to load fluctuations are reduced.