The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2026
Filed:
Jan. 13, 2024
Mitsubishi Electric Corporation, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
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 Vth; 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 switching elements. The switching elements of an upper arm include PMOSs connected to a same voltage source. The switching elements of a lower arm include NMOSs. The controller turns off the PMOS when the alarm signal is output, and turns on the NMOS when the trigger signal is output.