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. 24, 2026
Filed:
Sep. 27, 2022
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Ryusuke Kanomata, Osaka, JP;
Shinji Ujita, Osaka, JP;
Kenichiro Tanaka, Hyogo, JP;
Takeshi Nakayashiki, Osaka, JP;
Takayuki Hirokawa, Osaka, JP;
Abstract
The power conversion device can undergo autonomous search control for ZVS without a larger circuit area or lower reliability. The power conversion device performs, in each switching cycle, an operation of turning the control switch (CTLSW) on and afterward off while the synchronous rectification switch (SRSW) is off, and then turning the synchronous rectification switch on and afterward off while the control switch is off. Whether the inductor current (i) is positive or negative is detected at the detection timing backed by a predetermined period (T) from a timing at which the synchronous rectification switch switches from on to off, based on the detection result, the on-period (T) of the synchronous rectification switch is corrected.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile