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:
Mar. 28, 2017
Filed:
Apr. 04, 2015
Pitleong Wong, San Jose, CA (US);
Yuancheng Ren, Hangzhou, CN;
Xunwei Zhou, Milpitas, CA (US);
JoulWatt Technology Inc. Limited, Hangzhou, CN;
Abstract
To maximize power efficiency, dead time between 'on' times of a synchronous rectifier ('SR') MOSFET switch and a main switch for CCM operation in particular in isolated and non-isolated self-driven synchronous DC-DC converters needs to be optimized. To accomplish that objective, the latest conduction time t of a body diode of the SR MOSFET following conduction thereof is determined, compared with a selected fixed optimum period T, and incrementally or decrementally adjusted in a subsequent switching cycle while t is unequal to T, depending on whether t is shorter or longer than T, so that t eventually is made substantially equal to Tin length. This process is to be repeated continuously.