ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,942, issued on Sept. 23, was assigned to Chengdu Monolithic Power Systems Co. Ltd. (Sichuan, China).

"Voltage converter and a power supply control circuit thereof" was invented by Hui Li (Hangzhou, China) and Siran Wang (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power supply control circuit for controlling a charging process of a power supply capacitor to produce a power supply voltage to power a power control chip is disclosed. The power supply control circuit has a charging switch controlled by a charging control signal, and the power supply capacitor is coupled to an input voltage when the charging switch is on. The power ...