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:
Jan. 27, 2026
Filed:
Dec. 27, 2023
Rohm Co., Ltd., Kyoto, JP;
Kazuhiro Horii, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A switching power supply device includes a switching element and a controller. The controller includes a current source circuit, a voltage source circuit, a PWM signal generation circuit, a capacitor of which the first terminal is connected to the current source circuit and of which the second terminal is connected to the PWM signal generation circuit, a one-way conduction element provided between the first terminal of the capacitor and the voltage source circuit and configured to pass only a current flowing from the capacitor toward the voltage source circuit, and a comparison circuit configured to compare the voltage appearing at the first terminal of the capacitor with a voltage based on the output voltage of the switching power supply device and to control the switching device based on the result of the comparison.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile