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:
Nov. 26, 2024
Filed:
May. 11, 2023
Mitsubishi Electric Corporation, Tokyo, JP;
Jun Fukudome, Tokyo, JP;
Kazuya Hokazono, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A semiconductor device drive circuit includes: a first transistor and a second transistor operating complementarily between a first voltage and a second voltage lower than the first voltage; an internal power supply circuit operating between the first voltage and the second voltage, and including: a constant voltage generation unit outputting an internal power supply voltage steadily being a constant voltage; and a feedback unit receiving a node voltage of a connection node between the first transistor and the second transistor, and changing the internal power supply voltage output from the constant voltage generation unit in response to a change of the node voltage; and a pre-driver operating between the first voltage and the internal power supply voltage, and driving the first transistor or the second transistor, wherein the node voltage is output as a gate voltage of the power switching device.