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:
Mar. 22, 2011
Filed:
Dec. 31, 2008
Yen-hui Wang, Hsinchu, TW;
Chin-yen Lin, Hsinchu County, TW;
Chi-hao Wu, Taipei, TW;
Chia-chieh Hung, Taoyuan County, TW;
Yen-Hui Wang, Hsinchu, TW;
Chin-Yen Lin, Hsinchu County, TW;
Chi-Hao Wu, Taipei, TW;
Chia-Chieh Hung, Taoyuan County, TW;
Grenergy Opto, Inc., SBIP, Hsin-Chu, TW;
Abstract
A primary-side feedback control device for a power converter includes a control unit for generating a pulse signal according to a feedback signal for controlling on and off states of a switching transistor of the power converter, a comparator coupled to an auxiliary winding of a primary side of the power converter for generating at least one control signal according to a voltage on the auxiliary winding and a reference voltage, a sample-and-hold unit coupled to the auxiliary winding, the comparator, and the control unit for generating the feedback signal according to the voltage on the auxiliary winding and the at least one control signal, and a voltage generator coupled to the control unit, the comparator, and the sample-and-hold unit for generating the reference voltage according to the feedback signal.