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:
Sep. 19, 2006
Filed:
May. 14, 2004
Koichi Inoue, Kyoto, JP;
Masahito Kondo, Kyoto, JP;
Koichi Inoue, Kyoto, JP;
Masahito Kondo, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A power supply apparatus has a regulator and a regulator protection circuit. On detecting an abnormality, an abnormality detection circuit in the regulator protection circuit turns the regulator off. Based on the output of the abnormality detection circuit, an abnormality detection incidence checking circuit in the regulator protection circuit checks whether or not an abnormality has been detected a predetermined number of times within a predetermined length of time. When the abnormality detection incidence checking circuit recognizes that an abnormality has been detected the predetermined number of times within the predetermined length of time, an abnormality detection level setting circuit in the regulator protection circuit decreases the detection level of the abnormality detection circuit. This helps reduce the incidence of malfunctioning of the load to which the regulator feeds its output due to repeated detection of an abnormality and recovery therefrom.