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:
Apr. 18, 2023
Filed:
Jan. 24, 2022
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Kei Ishimaru, Chino, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 45/10 (2020.01); H05B 45/3725 (2020.01); H05B 45/325 (2020.01);
U.S. Cl.
CPC ...
H05B 45/10 (2020.01); H05B 45/325 (2020.01); H05B 45/3725 (2020.01);
Abstract
The integrated circuit device includes a drive circuit and a regulator. The drive circuit outputs a drive signal to a switching element. A source power supply voltage the same in potential as a source voltage of a transistor as the switching element is input to the regulator, and the regulator generates a gate power supply voltage based on the source power supply voltage. The drive circuit has a level shifter for level-shifting a PWM signal based on the gate power supply voltage and the source power supply voltage. The drive circuit outputs the drive signal based on an output signal of the level shifter to the gate of the transistor.