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:
Jun. 13, 2023
Filed:
Apr. 13, 2021
Airbus (S.a.s.), Blagnac, FR;
Gerhard Steiner, Mindelheim, DE;
Florian Kapaun, Kirchseeon, DE;
Airbus (S.A.S.), Blagnac, FR;
Abstract
A system for estimating junction temperatures of a power semiconductor module includes a constant current source to apply constant drain current to a drain terminal of a power semiconductor device, an adjustable gate voltage source to apply a gate voltage signal to a gate terminal, a drain-source voltage sensor between the drain terminal and the source terminal and configured to measure a value of the current drain-source voltage across the power semiconductor device and output a corresponding drain-source voltage signal, a gate controller to determine a difference between the drain-source voltage signal and a constant reference voltage and control output of the adjustable gate voltage source dependent on the determined difference, and a system controller to switch the power semiconductor device to its fully conducting state and to estimate junction temperature within the power semiconductor device in dependency from the on-state resistance in the fully conducting state.