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:
May. 12, 2020
Filed:
Sep. 23, 2019
Cypress Semiconductor Corporation, San Jose, CA (US);
Saravanan Murugesan, Bangalore, IN;
Karri Rajesh, Visakhapatnam, IN;
Pulkit Shah, Bangalore, IN;
Arun Khamesra, Bangalore, IN;
Hariom Rai, Bangalore, IN;
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
An AC-DC converter with secondary side controller and synchronous rectifier (SR) architecture and method for operating the same are provided. Generally, the controller is implemented as an integrated circuit including a peak-detector module having a peak comparator with a first input coupled to a drain of the SR through a single SR sense (SR-SNS) pin to receive a sinusoidal input. A sample and hold (S/H) circuit with an input coupled to the SR-SNS pin samples the sinusoidal input and holds on an output of thereof a peak sampled voltage received on the input. A direct current (DC) offset voltage coupled between the output of the S/H circuit and the second input of the peak comparator subtracts an DC offset voltage from the peak sampled voltage to compensate for DC offset inaccuracies introduced by the S/H circuit and the peak comparator. Other embodiments are also disclosed.