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:
Apr. 11, 2017
Filed:
Apr. 21, 2015
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Sicong Lin, Hangzhou, CN;
Wenbin Lu, Hangzhou, CN;
Wangmiao Hu, Hangzhou, CN;
Lijie Jiang, Hangzhou, CN;
Qiming Zhao, Hangzhou, CN;
Guangchao Zhang, San Jose, CA (US);
CHENGDU MONOLITHIC POWER SYSTEMS CO., LTD., Chengdu, CN;
Abstract
A PFC circuit having a switching circuit and a control circuit, the control circuit controls an operation mode of the switching circuit based on an input current and a switching frequency of the switching circuit, when the switching circuit works under a continuous current mode, the switching circuit is turned ON when the input current is less than an OFF current reference signal, and when the switching circuit works under a first discontinuous mode or a second discontinuous mode, the switching circuit is turned ON after a turn ON delay time period when the input current is less than the OFF current reference signal.