A 2:1 Capacitive Isolated Resonant Switched-Capacitor DC-DC Converter

  • Xinyu Zhang
  • , Yu Fu
  • , Yucheng Zhao
  • , Shouxiang Li*
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Traditional transformers face issues such as high losses and limited power density at high switching frequencies. By utilizing capacitors for energy processing, the efficiency and power density are enhanced due to the superior energy density that capacitors provide. To reduce system weight and losses, this paper proposes a 2:1 capacitive isolated resonant switched-capacitor converter that employs capacitive isolation to block common-mode (CM) voltage and supports zero-current switching (ZCS) and zero-voltage switching (ZVS). These features significantly reduce switching losses and enhance efficiency and power density. A hardware prototype was developed, and experimental results validate the converter's soft-switching characteristics, demonstrating its potential for high-efficiency applications.

Original languageEnglish
Title of host publication2025 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2025
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798331511098
DOIs
Publication statusPublished - 2025
Externally publishedYes
Event2025 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2025 - Beijing, China
Duration: 15 Aug 202517 Aug 2025

Publication series

Name2025 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2025

Conference

Conference2025 IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2025
Country/TerritoryChina
CityBeijing
Period15/08/2517/08/25

Keywords

  • Capacitive isolation
  • DC-DC converter
  • ZCS
  • ZVS
  • resonant switched-capacitor

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