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. 02, 2014
Filed:
Aug. 02, 2011
Jin-tae Kim, Seoul, KR;
Hyun-chul Eom, Seoul, KR;
Shanmei LI, Bucheon, KR;
Kwang-il Lee, Bucheon, KR;
Hojae Lee, Seoul, KR;
Jin-Tae Kim, Seoul, KR;
Hyun-Chul Eom, Seoul, KR;
Shanmei Li, Bucheon, KR;
Kwang-Il Lee, Bucheon, KR;
Hojae Lee, Seoul, KR;
Fairchild Korea Semiconductor Ltd., Bucheon, KR;
Abstract
The present invention relates to a hold-up time expansion circuit and a converter including the same. The hold-up time expansion circuit controls switching frequency of at least one switch according to the input voltage of the converter. The converter is dependent on the switching frequency that is controlled by the hold-up time expansion circuit, and controls the duty of at least one switch according to the feedback signal of the output voltage.