Trends in Isolated Power Converters Using High-Frequency Transformers Takaharu Takeshita*,a, Fellow Wataru Kitagawa*, Senior Member Kohei Budo-Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan

Trends in Isolated Power Converters Using High-Frequency Transformers Takaharu Takeshita*,a, Fellow Wataru Kitagawa*, Senior Member Kohei Budo**, Member 

Department of Electrical and Mechanical Engineering, Nagoya Institute

of Technology, Gokiso, Showa, Nagoya 466-8555, Japan

**Department of Electrical, Electronic and Computer Engineering, Gifu

University, 1-1 Yanagido, Gifu City 501-1193, Japan

This paper surveys recent trends in isolated power converters using high-frequency transformers, which are used in DC power distribution systems and chargers for electric vehicles, etc. This paper explains the trends in the magnetic materials used in highfrequency transformers for galvanic isolation, the circuit configurations of DC-DC and AC-DC converters using high-frequency transformers, and isolated modular multilevel converters for large capacity applications. © 2026 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.

ORIGINAL LINK :https://onlinelibrary.wiley.com/doi/epdf/10.1002/tee.70259