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:
Sep. 15, 2026
Filed:
May. 27, 2022
Hitachi Astemo, Ltd., Hitachinaka, JP;
Hitachi Astemo, Ltd., Hitachinaka, JP;
Abstract
In an electronic control unit on which a power semiconductor element is mounted, provided is a highly reliable and low-loss electronic control unit capable of performing a high-speed switching operation while suppressing a surge voltage during a switching operation of the power semiconductor element. The electronic control unit includes: a microcontroller; a power semiconductor element; and a gate drive circuit that generates a gate drive current of the power semiconductor element on a basis of a command from the microcontroller. The gate drive circuit detects a change in an output voltage of the power semiconductor element to detect start of on/off operation of switching, increases a gate drive current in a process of the switching in an on state and before reaching a peak voltage, and decreases the gate drive current in a process of the switching in an off state and before reaching the peak voltage.