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, Türkiye, 30 Mayıs - 01 Haziran 2009, ss.47-52 identifier

  • Basıldığı Şehir: İstanbul
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.47-52

Özet

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.