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:
May. 31, 2022
Filed:
Apr. 24, 2019
Diamond & Zebra Electric Mfg. Co., Ltd., Osaka, JP;
Shogo Nakahara, Osaka, JP;
Hiroyoshi Nakayama, Osaka, JP;
DIAMOND & ZEBRA ELECTRIC MFG. CO., LTD., Osaka, JP;
Abstract
The DC-DC converter has a configuration in which a first full-bridge circuit and a second full-bridge circuit are connected via a transformer. A control circuit controls soft switching of each switching element. An inductor current flowing through the transformer or an equivalent inductor equivalent to the transformer at a time of switching of turning on or off each switching element is greater than or equal to a threshold current. When the first full-bridge circuit and the second full-bridge circuit have different output voltages Vand V, the control circuit causes the inductor current at start times tand tof a polarity inversion period to approach the inductor current at end times tand t, the polarity inversion period being a period in which Vand Vhave reverse polarities. This suppresses an increase in loss resulting from a flow of large current and enables ZVS control.