DocumentCode
255773
Title
Multilevel inverter based class D audio amplifier for capacitive transducers
Author
Nielsen, David ; Knott, Arnold ; Andersen, Michael A. E.
Author_Institution
Tech. Univ. of Denmark, Lyngby, Denmark
fYear
2014
fDate
26-28 Aug. 2014
Firstpage
1
Lastpage
7
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) below 1 % is presented.
Keywords
audio-frequency amplifiers; capacitive sensors; harmonic distortion; invertors; power capacitors; THD+N; audio applications; capacitance 100 nF; capacitive transducers; class D audio amplifier; flying capacitor; frequency 0.1 kHz to 3.5 kHz; midrange region; multilevel inverter; semiconductor voltage stress reduction; total harmonic distortion plus noise; voltage 300 V; Capacitors; Frequency modulation; Inductors; Inverters; Stress; Transducers; Active damping; Amplifiers; Drive; High voltage power converters; Multilevel converters;
fLanguage
English
Publisher
ieee
Conference_Titel
Power Electronics and Applications (EPE'14-ECCE Europe), 2014 16th European Conference on
Conference_Location
Lappeenranta
Type
conf
DOI
10.1109/EPE.2014.6910925
Filename
6910925
Link To Document