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:
Dec. 09, 2014
Filed:
May. 22, 2012
Jyun-che Ho, Xikou Township, Chiayi County, TW;
Chien-fu Tang, Hsinchu, TW;
Isaac Y. Chen, Zhubei, TW;
Shao-hung LU, Taoyuan, TW;
Tzu-chen Lin, Zhubei, TW;
Jyun-Che Ho, Xikou Township, Chiayi County, TW;
Chien-Fu Tang, Hsinchu, TW;
Isaac Y. Chen, Zhubei, TW;
Shao-Hung Lu, Taoyuan, TW;
Tzu-Chen Lin, Zhubei, TW;
Richtek Technology Corporation, Chupei, Hsin-Chu, TW;
Abstract
The present invention discloses a power factor correction circuit, a control circuit therefor and a method for driving a power factor correction circuit. The power factor correction circuit receives rectified power obtained by rectifying AC power, and corrects the power factor thereof. The power factor correction circuit includes an inductor, and it generates a reference signal as a limit for the inductor current. The reference signal is proportional to Comp/Vin, wherein Comp is a signal relating to a feedback signal, and Vin is a voltage signal relating to the AC power or the rectified power.