ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,431,791, issued on Sept. 30, was assigned to RICHTEK TECHNOLOGY Corp. (Zhubei, Taiwan).

"High efficiency boost power factor correction circuit having shared pin and conversion control circuit thereof" was invented by Shih-Ho Hsu (New Taipei, Taiwan), Kun-Yu Lin (Hsinchu, Taiwan) and Wei-Hsu Chang (Hsinchu, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A boost power factor correction circuit includes: a switch and an inductor coupled to each other; a current sensing device generating a current sensing signal according to a current flowing through the switch; a temperature sensing device coupled to the inductor to generate a temperature sensing s...