ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,540, issued on March 18, was assigned to Cypress Semiconductor Corp. (San Jose, Calif.).

"Synchronous rectifier scheme to avoid cross-conduction in a fly-back converter" was invented by Viral Kishorkumar Brahmbhatt (Vadodara, India) and Arun Khamesra (Bangalore, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fly-back converter and method of operating is provided to eliminate cross-conduction between a power-switch (PS) on a primary side of a transformer and a synchronous-rectifier (SR) on a secondary side when operating in continuous conduction mode. Generally, the method includes turning on the SR when a drain voltage of the SR drops to a ...