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:
Aug. 06, 2013
Filed:
Jul. 19, 2010
Applicants:
Liang-pin Tai, Gueiren Township, Tainan County, TW;
Tzu-chen Lin, Taipei, TW;
Cheng-hsuan Fan, Hukou Shiang, TW;
Inventors:
Liang-Pin Tai, Gueiren Township, Tainan County, TW;
Tzu-Chen Lin, Taipei, TW;
Cheng-Hsuan Fan, Hukou Shiang, TW;
Assignee:
Richtek Technology Corp., Chupei, Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/36 (2007.01);
U.S. Cl.
CPC ...
Abstract
A feedback circuit for an isolated power converter includes an opto-coupler and a reversed polarity regulator. The opto-coupler provides a current related to an output voltage of the isolated power converter. When the isolated power converter enters light load, the output voltage rises and the reversed polarity regulator reduces the current to decrease the power consumption and thus improve the light load efficiency of the isolated power converter.