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. 09, 2013
Filed:
Nov. 20, 2008
Wei Chen, Saratoga, CA (US);
Wei Chen, Saratoga, CA (US);
Silergy Technology, Sunnyvale, CA (US);
Silergy Semiconductor Technology (Hangzhou) Ltd., Hangzhou, CN;
Abstract
Methods and circuits for synchronous rectifier control are disclosed herein. In one embodiment, a synchronous rectifier control circuit can include: (i) a first sense circuit to sense a voltage between first and second power terminals of a synchronous rectifier device prior to a turn-on of the device, where a timing of the turn-on of the synchronous rectifier device is adjustable using a first control signal generated from the first sense circuit; (ii) a second sense circuit configured to sense a voltage between the first and second power terminals after a turn-off of the device, where a timing of the turn-off of the device is adjustable using a second control signal generated from the second sense circuit; and (iii) a driver control circuit configured to receive the first and second control signals, and to generate therefrom a gate control signal configured to drive a control terminal of the synchronous rectifier device.