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:
Nov. 04, 2025
Filed:
Mar. 22, 2021
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Takayuki Tange, Milton Keynes, GB;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A DC-DC conversion circuit includes an input voltage; a half-bridge circuit connected to the input voltage and including a first leg with first, second, third, and fourth switching elements connected in series and including a second leg with first and second capacitors connected in series with each other and connected in parallel with the first leg; and a flying capacitor connected to a node between the first switching element and the second switching element and a node between the third switching element and the fourth switching element; a transformer including a primary winding connected to the half-bridge circuit; and a controller that controls the first to fourth switching elements. The controller selectively controls the half-bridge circuit in a half-bridge operation in which ±Vin/2 is applied to the primary winding, where Vin is the input voltage and a 3-level half-bridge operation in which ±Vin/4 is applied to the primary winding.