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:
Dec. 16, 2025
Filed:
Mar. 13, 2023
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Kensuke Takemoto, Osaka, JP;
Takeshi Nakayashiki, Osaka, JP;
Abstract
A power supply device includes a first switch having one end configured to be connected to a first DC power supply; a first capacitor connected between another end of the first switch and a reference potential; a second switch having one end configured to be connected to a second DC power supply; a second capacitor connected between another end of the second switch and the reference potential; first and second DC-DC converters connected in parallel between another end of the first switch and another end of the second switch; and a controller. The controller includes a stepping-down operation mode, a boosting operation mode, and a boosting and stepping-down operation mode. In the boosting and stepping-down operation mode, while the first switch and the second switch are turned off, the first DC-DC converter steps down a voltage of the first capacitor and output the stepped down voltage to the second capacitor, and simultaneously, the second DC-DC converter boosts a voltage of the second capacitor and output the boosted voltage to the first capacitor.