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:
Jul. 14, 2026
Filed:
Mar. 15, 2024
GM Global Technology Operations Llc, Detroit, MI (US);
Yilun Luo, Ann Arbor, MI (US);
Benjamin S. Ngu, Royal Oak, MI (US);
Chandra S. Namuduri, Troy, MI (US);
Mohammad N. Anwar, Northville, MI (US);
Eric B. Gach, Clarkston, MI (US);
Abir Chatterjee, Novi, MI (US);
Rashmi Prasad, Troy, MI (US);
Khorshed Mohammed Alam, Canton, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A system for prognosis and control of a power module includes a gate driver circuit and a controller circuit. The gate driver circuit drives a target gate node of a target power transistor in response to a pulse width modulation signal, measures a target gate voltage, switches a desaturation signal in response to the target power transistor switching between an off state and an on state, measures a target transistor voltage, and measures a target transistor current. The controller circuit modulates the pulse width modulation signal to increase the target gate voltage, determines a target threshold voltage as the target gate voltage in response to the desaturation signal switching states, determines a target on-resistance based on the target transistor voltage and the target transistor current, and controls the target power transistor based on the target threshold voltage and the target on-resistance.