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:
Jan. 11, 2022
Filed:
Jan. 31, 2020
Dialog Semiconductor Inc., Campbell, CA (US);
Kuangzhe Xu, Campbell, CA (US);
Pengju Kong, Campbell, CA (US);
Jiandong Zhang, Campbell, CA (US);
Hien Bui, Campbell, CA (US);
DIALOG SEMICONDUCTOR INC., Campbell, CA (US);
Abstract
Disclosed is a system for determining a primary switching event in an isolated converter having a primary-side and a secondary-side. The system includes a primary-switch (PS) on the primary-side, a synchronous rectifier (SR) on the secondary-side, an integration circuit, and a SR controller. The integration circuit is in signal communication with the SR on the secondary-side and the SR controller is in signal communication with the SR and the integration circuit. The SR is configured to produce a drain-to-source voltage (V) and the integration circuit is configured to integrate a difference between the Vand a output voltage (V) (produced by the secondary-side) over time to produce a Vover time value (V). The SR controller is configured to determine if the Vis greater than a first threshold voltage (V) and determine the primary switching event when the Vis greater than a second threshold voltage (VS).