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:
Jan. 18, 2022
Filed:
May. 25, 2020
Applicant:
Silergy Semiconductor Technology (Hangzhou) Ltd, Hangzhou, CN;
Inventors:
Assignee:
Silergy Semiconductor Technology (Hangzhou) LTD, Hangzhou, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/70 (2006.01); G01R 21/00 (2006.01); H02M 1/12 (2006.01); H02M 1/42 (2007.01);
U.S. Cl.
CPC ...
G05F 1/70 (2013.01); G01R 21/006 (2013.01); H02M 1/12 (2013.01); H02M 1/4208 (2013.01);
Abstract
A power factor correction circuit includes a power meter configured to measure a total harmonic distortion (THD) at an input port; a switching-type regulator that is controllable by a switch control signal in order to adjust a power factor; and a controller configured to generate the switch control signal to control the switching-type regulator to perform power factor correction, where the controller adjusts an on-time of a main switch of the switching-type regulator based on the measured THD to decrease the THD.