A novel half-bridge asymmetrical ZCS-PWM DC-DC converter with high frequency-link

Tomokazu Mishima, Eiji Hiraki, Toshihiko Tanaka, Mutsuo Nakaoka

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A novel zero current soft-switching (ZCS)-PWM cell-assisted half-bridge DC-DC converter topology with a high frequency link is proposed in this paper. The newly-proposed DC-DC converter consists of a PWM-controlled singleended half-bridge high frequency (HF) inverter and a current doubler rectifier linked with a HF transformer. In order to attain the wide range of ZCS-PWM operation in the primary-side HF inverter, an active edge resonant snubber cell composed by a switched capacitor and a lossless inductor is adopted in the half-bridge leg, providing ZCS commutation for a wide range of output power. The operation characteristics of the DC-DC converter proposed here are described, and its feasibility data is demonstrated and evaluated with simulation and experimental results.

Original languageEnglish
Pages (from-to)388-395+5
Journalieej transactions on industry applications
Issue number4
Publication statusPublished - Dec 1 2008
Externally publishedYes


  • Active edge resonant snubber
  • Asymmetrical duty cycle
  • Constant switching frequency
  • Current doubler rectifier
  • HF inverter
  • Half-bridge DC-DC converter
  • Series transformer resonance

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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