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:
Aug. 31, 2021
Filed:
Feb. 25, 2020
Applicant:
Fuji Electric Co., Ltd., Kanagawa, JP;
Inventor:
Masakazu Gekinozu, Mie, JP;
Assignee:
FUJI ELECTRIC CO., LTD., Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/158 (2006.01); H02M 3/335 (2006.01); H02M 7/5387 (2007.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/158 (2013.01); H02M 3/33507 (2013.01); H02M 3/33569 (2013.01); H02M 7/5387 (2013.01); H02M 1/0003 (2021.05);
Abstract
A DC-DC converter includes current resonant converter units connected in parallel. The converter units include respective control devices each of which includes a control circuit, a gate-pulse generating circuit, and the like. Taking into account a relational characteristic of a switching frequency and an output voltage of each of the converter unit, a lowest frequency as a common switching frequency, from among switching frequencies with respect to a same output voltage, is shared by the control circuits. The converter units are operated with drive pulses each of which is at the common switching frequency.