Active clamped ZVS forward converter with soft-switched synchronous rectifier for maximum efficiency operation

Acik A., Cadirci I.

29th Annual IEEE Power Electronics Specialists Conference, Fukuoka, Japan, 17 - 22 May 1998, pp.1237-1242 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • City: Fukuoka
  • Country: Japan
  • Page Numbers: pp.1237-1242


An active-clamped, zero-voltage switched forward converter equipped with a soft-switched synchronous rectifier is designed and implemented for some low output voltage applications where maximized efficiency is of utmost importance. The converter efficiency is maximized due to soft-switching of the main, active clamp and the synchronous rectifier MOSFET switches. Experimental results are presented for a converter with a de input voltage of 48V, an output voltage of 5V and a de electronic load up to 10A. The measured efficiency was 92% for an output power of 50 W.