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:
Oct. 06, 2026
Filed:
Jan. 17, 2024
Minoru Kado, Sagamihara, JP;
Takeshi Sato, Yokohama, JP;
Minoru Kado, Sagamihara, JP;
Takeshi Sato, Yokohama, JP;
MITSUMI ELECTRIC CO., LTD., Tokyo, JP;
Abstract
A switching power supply device with synchronous rectification includes a transformer that receives an input voltage on a primary side, a synchronous rectifier element that conducts/breaks a current of a secondary-side coil of the transformer, and a synchronous rectifier control circuit that drives the synchronous rectifier element to be on/off. The synchronous rectifier control circuit includes an ON-timing detection circuit that detects a turn-on timing to turn on the synchronous rectifier element based on a terminal voltage of the synchronous rectifier element, an OFF-timing detection circuit that detects a turn-off timing to turn off the synchronous rectifier element by comparing the terminal voltage of the synchronous rectifier element with a predetermined turn-off threshold voltage, and an ON/OFF control circuit that generates an ON/OFF control signal for the synchronous rectifier element based on an output signal of the ON-timing detection circuit and an output signal of the OFF-timing detection circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile