AC/AC converter with class DE tuned power oscillator

Mitsuhiro Matsuo, Hiroo Sekiya, Hirotaka Koizumi, Tadashi Suetsugu, Shinsaku Mori, Iwao Sasase

Research output: Contribution to journalConference articlepeer-review


We present the analysis and experimental results for a novel AC/AC converter with Class DE tuned power oscillator which is one application of Class DE inverter. Proposed circuit has several desirable features. First, it operates at high frequency and high efficiency region by means of Class E switching conditions. Second, it has no external gate-drive circuit to drive the MOSFETs. Therefore it is more lighter and smaller than conventional Class DE inverter. Third, contrast to conventional Class DE oscillator, proposed circuit has ac input so that it has no reference inverter for starting up the oscillator. The converter is applicable for UPS, Battery charger, and Electronic ballets for lighting. Experimental results matched well with the theoretical predictions. Measured efficiency was over 70% with 1 MHz 4.6 W output.

Original languageEnglish
Pages (from-to)685-691
Number of pages7
JournalINTELEC, International Telecommunications Energy Conference (Proceedings)
Publication statusPublished - 1998 Dec 1
EventProceedings of the 1998 20th International Telecommunications Energy Conference, INTELEC - San Francisco, CA, USA
Duration: 1998 Oct 41998 Oct 8

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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