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:
Jul. 20, 2021
Filed:
Sep. 20, 2018
Aisin Aw Co., Ltd., Anjo, JP;
Yasushi Nakamura, Nishio, JP;
Keita Mutsuura, Miyoshi, JP;
Yoshinobu Ito, Anjo, JP;
Shota Sekiguchi, Inazawa, JP;
AISIN AW CO., LTD., Anjo, JP;
Abstract
An amplitude of current ripples on a primary side of a power supply device that uses a plurality of transformers is reduced. A driving power supply device () that supplies electric power to a plurality of drive circuits () that individually drive switching elements () of an inverter () includes a plurality of transformers (L) having secondary-side coils (Ls) which are individually connected to the respective corresponding drive circuits (); a plurality of transformer driving units () each including a driving switching element (M) that controls supply of electric power to a primary-side coil (Lp); and a power supply control device () that provides transformer drive signals (MG) for driving the transformer driving units (). The power supply control device () drives the transformer driving units () by transformer drive signals (MG) having different phases.