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. 04, 2025
Filed:
Sep. 10, 2021
Semiconductor device, control device for transmission, and control method of electronic control unit
Hitachi Astemo, Ltd., Hitachinaka, JP;
Keishi Komoriyama, Hitachinaka, JP;
Yoichiro Kobayashi, Hitachinaka, JP;
Minoru Migita, Hitachinaka, JP;
HITACHI ASTEMO, LTD., Ibaraki, JP;
Abstract
There is provided a power saving and highly reliable semiconductor device on which a switching power supply circuit and a driver circuit are mounted together, and which can perform appropriate control by the driver circuit even when a battery terminal is disconnected while reducing power loss in the entire semiconductor device. The semiconductor device includes: a first terminal which is connected to a battery power source; a switching power supply circuit which steps down a battery voltage input from the first terminal; a second terminal which is connected to a switching power source different from the battery power source; a regulator circuit which steps down a voltage input from the second terminal; and a predriver circuit which is connected to the regulator circuit.