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:
Mar. 20, 2018
Filed:
Jul. 18, 2016
Yazaki Corporation, Tokyo, JP;
Yoshinori Matsushita, Shizuoka, JP;
Osamu Kimura, Shizuoka, JP;
YAZAKI CORPORATION, Tokyo, JP;
Abstract
A power supply apparatus includes a primary-side circuit and a secondary-side circuit magnetically coupled by a transformer. The secondary-side circuit includes: a first circuit that is connected to a secondary winding of the transformer, performs current doubler rectification, and outputs a first output voltage; a second circuit that is connected to the secondary winding of the transformer, performs a step-down chopping operation, and outputs a second output voltage; semiconductor switching elements that control the step-down chopping operation; and diodes that are shared by the first circuit and the second circuit when rectifying a direct current voltage supplied from the primary-side circuit. The first circuit includes first inductors connected in parallel. A control unit controls switching of the primary-side circuit to establish electrical continuity between the secondary winding of the transformer and the first inductors in order.