Multilevel inverter based class D audio amplifier for capacitive transducers

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Abstract

The reduced semiconductor voltage stress makes the multilevel inverters especially interesting, when driving capacitive transducers for audio applications. A ± 300 V flying capacitor class D audio amplifier driving a 100 nF load in the midrange region of 0.1-3.5 kHz with Total Harmonic Distortion plus Noise (THD+N) belo w1%is presented.
Original languageEnglish
Title of host publicationProceedings of EPE’14-ECCE
Number of pages7
Publication date2014
Publication statusPublished - 2014
Event16th Conference on Power Electronics and Applications - Lappeenranta University of Technology, Lappeenranta, Finland
Duration: 26 Aug 201428 Aug 2014

Conference

Conference16th Conference on Power Electronics and Applications
LocationLappeenranta University of Technology
CountryFinland
CityLappeenranta
Period26/08/201428/08/2014

Keywords

  • Multilevel converters
  • High voltage power converters
  • Drive
  • Active damping
  • Amplifiers

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