US Patent Issued to Chengdu Monolithic Power Systems on Nov. 25 for "Quasi-resonant controlled switching power supply with an adaptive upper limit of valley number" (Chinese Inventor)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,483,142, issued on Nov. 25, was assigned to Chengdu Monolithic Power Systems Co. Ltd. (Sichuan, China).

"Quasi-resonant controlled switching power supply with an adaptive upper limit of valley number" was invented by Xuefeng Chen (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A controller used in a switching power supply having a power switch and an energy storage element. A winding voltage of the energy storage element oscillates to provide an oscillation signal having one or more valleys during an OFF period of the power switch. The controller has a target valley number generator for providing a target locked valley number which is no...