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:
Jun. 20, 2017
Filed:
Dec. 18, 2015
Hangzhou Mps Semiconductor Technology Ltd., Hangzhou, CN;
Bairen Liu, Hangzhou, CN;
Licheng Sheng, Hangzhou, CN;
Bo Yu, Hangzhou, CN;
Hongqiang Qin, Hangzhou, CN;
Qiming Zhao, Hangzhou, CN;
Naixing Kuang, Hangzhou, CN;
Eric Yang, Saratoga, CA (US);
Hangzhou MPS Semiconductor Technology Ltd., Hangzhou, CN;
Abstract
A method of capacitive mode detection is used in a resonant converter. The resonant converter has a square wave generator having a first switch and a second switch, a resonant network, an isolated transformer having a primary winding and a second winding, and a rectifier network providing an output DC voltage for a load. The method of capacitive mode detection includes: detecting a voltage of the secondary winding and generating a voltage detection signal; detecting an output DC voltage of the rectifier network and generating a voltage detecting threshold; comparing the voltage detection signal with the voltage detection threshold when either of the first and the second switches is turned OFF; generating a flag signal indicating whether the resonant converter enters into a capacitive mode based on the comparison result.