ALEXANDRIA, Va., July 30 -- United States Patent no. 12,372,991, issued on July 29, was assigned to RICHTEK TECHNOLOGY Corp. (Zhubei, Taiwan).
"Impedance-tracking circuit" was invented by Min-Hung Hu (New Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An impedance-tracking circuit includes a voltage divider, a first dynamic resistor, and a first amplifier. The voltage divider divides a voltage difference between a first voltage and a second voltage to generate a divided voltage. The first dynamic resistor has a first resistance value and is coupled between the first voltage and a third voltage. The first dynamic resistor adjusts the first resistance value according to a first control signal. T...