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:
Nov. 07, 2017
Filed:
Jun. 11, 2015
Applicant:
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Inventors:
Wenbin Lu, Hangzhou, CN;
Sicong Lin, Hangzhou, CN;
Qiming Zhao, Hangzhou, CN;
Lijie Jiang, Hangzhou, CN;
Guangchao Zhang, San Jose, CA (US);
Assignee:
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 1/42 (2007.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 1/4208 (2013.01); H02M 1/4225 (2013.01); H02M 2001/0012 (2013.01); Y02B 70/126 (2013.01);
Abstract
A digital PFC circuit with improved power factor is described. The digital PFC circuit uses a compensation current generating unit and a reference current adjust unit to eliminate the effect of a current flowing through an input capacitor to the input current, so that the input current and the input line voltage of the digital PFC circuit are controlled to be in-phase.