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:
Aug. 22, 2023
Filed:
Nov. 14, 2019
Mitsubishi Electric Corporation, Tokyo, JP;
Julien Morand, Rennes, FR;
Stefan Mollov, Rennes, FR;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A current going through the first power semiconductor is sensed by a first and a second current derivative sensing means, the current going through the second semiconductor is sensed by a third and a fourth current derivative sensing means, when the current going through the first power semiconductor increases, the first current derivative means providing a positive voltage and the second current derivative means providing an opposite negative voltage, when the current going through the second power semiconductor increases, the third current derivative means providing a positive voltage and the fourth current derivative means providing an opposite voltage and the system reduces the voltage on the gate of the first power semiconductor if the first and third current derivative means provide voltages of same sign and reduces the voltage on the gate of the second power semiconductor if the second and fourth current derivative means provide voltages of same sign.