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:
Oct. 29, 2002
Filed:
Apr. 17, 2001
Mitsuaki Ootani, Tokyo, JP;
Taiyo Yuden Co. Ltd., Tokyo, JP;
Abstract
An FET is connected in parallel to a series circuit of a switching device and an inductor between an input terminal and an output terminal , wherein an output voltage V is dropped only by an operation of the switching device ; the FET is turned on by a driving circuit when the switching device sustains an on duty factor of 100% so that a series resistance of the switching device and the inductor is connected in parallel to an on resistance of the FET , thereby increasing a supply current and extending a period during which an output voltage provided to the output terminal is sustained at a predetermined level. Therefore, a power circuit capable of extending an operating time of a battery-operated power supply, a method for driving same, and further an electronic module implementing same can be obtained.