ALEXANDRIA, Va., March 24 -- United States Patent no. 12,587,189, issued on March 24, was assigned to Mitsubishi Electric Corp. (Tokyo).
"Drive circuit" was invented by Yu Seikoba (Tokyo), Shohei Sano (Fukuoka, Japan) and Yo Habu (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gate driver IC includes a plurality of switching elements that drives an IGBT; a comparator that outputs an alarm signal in a case where a potential of a shunt resistor connected between an emitter terminal of the IGBT and a ground is equal to or higher than a Vth1; a delay circuit that outputs a trigger signal after the comparator starts outputting the alarm signal; and a controller that controls on and off of the plurality of...