ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,506,398, issued on Dec. 23, was assigned to ANPEC ELECTRONICS Corp. (Hsinchu, Taiwan).

"Buck converter using ultra-low working current" was invented by Yi-Chuan Lu (Hsinchu, Taiwan) and Chih-Heng Su (Hsinchu, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A buck converter using an ultra-low working current is provided. An error amplifier amplifies a difference between a voltage of an output terminal of the buck converter and a reference voltage to output an error amplified signal. A comparator compares a voltage of the error amplified signal with a ramp voltage to output a comparison signal. A control circuit controls a driver circuit to drive a ...