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:
Jul. 23, 2002
Filed:
Apr. 18, 2000
Applicant:
Inventor:
Atsuo Fukui, Chiba, JP;
Assignee:
Seiko Instruments Inc., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/40 ;
U.S. Cl.
CPC ...
G05F 1/40 ;
Abstract
An output voltage detecting circuit is added to a step-down DC-DC converter or a step-up DC-DC converter and is controlled so that an abnormally high increase in a regulated output voltage of the DC-DC converter is detected and the output voltage is inhibited from increasing further so that it may be rapidly returned to a normal value within the range of regulated voltages of the DC-DC converter.