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. 21, 2015
Filed:
Mar. 24, 2010
Applicants:
Young-bae Park, Gyeonggi-do, KR;
Sang Cheol Moon, Gyeonggi-do, KR;
Byoung Heon Kim, Gyeonggi-do, KR;
Inventors:
Young-Bae Park, Gyeonggi-do, KR;
Sang Cheol Moon, Gyeonggi-do, KR;
Byoung Heon Kim, Gyeonggi-do, KR;
Assignee:
Fairchild Korea Semiconductor Ltd., Bucheon, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 1/42 (2007.01);
U.S. Cl.
CPC ...
H02M 1/4225 (2013.01); H02M 1/42 (2013.01); Y02B 70/126 (2013.01);
Abstract
A power factor correction circuit includes an inductor, a power switch, and a power factor correction controller. The power factor correction controller receives information on an inductor voltage to control a switching operation of the power switch. The power factor controller estimates an input voltage according to the duty ratio of the power switch.