A Multi-Level Switching Amplifier with Improved Power Efficiency for Analog Signals with High Crest Factor

Doutreloigne J., Buyle J., De Gezelle V.

8th WSEAS International Conference on Microelectronics, Nanoelectronics, Optoelectronics, İstanbul, Turkey, 30 May - 01 June 2009, pp.47-52 identifier

  • Publication Type: Conference Paper / Full Text
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.47-52
  • Istanbul Technical University Affiliated: No


This paper describes a new multi-level switching amplifier concept, targeting increased power efficiency for analog signals with a very high crest factor. Interesting application fields include audio power amplifiers or line drivers in ADSL and VDSL equipment. Calculations prove its superior power efficiency compared to conventional class-D switching amplifiers as well as linear class-AB and class-G amplifiers. A silicon implementation of a multi-level switching ADSL line driver chip is currently in progress.