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. 22, 2013
Filed:
Oct. 26, 2010
Young-bae Park, Anyang, KR;
Sang Cheol Moon, Bucheon, KR;
Byoung Heon Kim, Bucheon, KR;
Byung Kwon Choi, Bucheon, KR;
Cheng Sung Chen, Hsinchu, TW;
Young-Bae Park, Anyang, KR;
Sang Cheol Moon, Bucheon, KR;
Byoung Heon Kim, Bucheon, KR;
Byung Kwon Choi, Bucheon, KR;
Cheng Sung Chen, Hsinchu, TW;
Fairchild Korea Semiconductor Ltd., Bucheon, KR;
Abstract
The present invention relates to a power factor correction circuit and a driving method thereof. The power factor correction circuit includes a power switch controlling an inductor current flowing in an inductor, an auxiliary inductor coupled to the inductor with a predetermined turn ratio, and a power factor correction controller controlling output power by controlling a switching operation of the power switch. The power factor correction controller determines whether or not an output voltage of the output power is an over-voltage by using the sum of a source current and a sink current that control a zero current detection voltage to be included within a predetermined clamping range, the zero current detection voltage corresponding to an auxiliary voltage that is a both-end voltage of an auxiliary inductor.