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:
Dec. 29, 2020
Filed:
Feb. 25, 2019
Chengdu Monolithic Power Systems Co. Ltd., Chengdu, CN;
Tianzhu Zhang, Chengdu, CN;
Chengdu Monolithic Power Systems Co., Ltd., Chengdu, CN;
Abstract
A synchronous rectifier OFF control module and a synchronous rectifying control circuit. The synchronous rectifier OFF control module may receive a zero-cross threshold signal and a drain-source voltage signal indicative of a drain to source voltage of a synchronous rectifier, and to compare the drain-source voltage signal with the zero-cross threshold signal to determine whether the rectifier current flowing through the synchronous rectifier is crossing zero. The synchronous rectifier OFF control module may further receive a peak current detection signal indicative of a peak value of the rectifier current, and to adjust the magnitude of the zero-cross threshold signal to vary in the same direction as the peak value of the rectifier current based on the peak current detection signal. The synchronous rectifier OFF control module may provide more accurate control to the turn OFF moment of the synchronous rectifier and thus can help to reduce power loss.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile