US Patent Issued to Cypress Semiconductor on Oct. 21 for "NSN detection in primary-side-controlled AC-DC converter" (Indian Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,451,814, issued on Oct. 21, was assigned to Cypress Semiconductor Corp. (San Jose, Calif.).

"NSN detection in primary-side-controlled AC-DC converter" was invented by Arun Khamesra (Bangalore, India), Hariom Rai (Bangalore, India) and Pulkit Shah (Bangalore, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "An AC-DC converter and method of operating the same is provided to sense negative voltage (NSN) on a synchronous rectifier (SR_DRAIN) on a secondary-side of the converter. The SR_DRAIN voltage is sensed and a first integration signal (volt-sec) generated based on a time and voltage for which the SR_DRAIN voltage is greater than a bus voltage (VBUS...