Investigation of Crosstalk in Self Oscillating Switch Mode Audio Power Amplifier

Birch TH, Ploug R, Iversen NE, Knott A. Investigation of Crosstalk in Self Oscillating Switch Mode Audio Power Amplifier. In: AES Convention 132. Audio Engineering Society; 2012. Paper 8631. Available from: https://aes.org/publications/elibrary-page/?id=16269

@inproceedings{Birch2012_16269,
  author = {Birch, Thomas Haagen and Ploug, Rasmus and Iversen, Niels Elkjær and Knott, Arnold},
  title = {{Investigation of Crosstalk in Self Oscillating Switch Mode Audio Power Amplifier}},
  booktitle = {AES Convention 132},
  note = {Paper 8631},
  year = {2012},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16269}
}

TY  - CPAPER
TI  - Investigation of Crosstalk in Self Oscillating Switch Mode Audio Power Amplifier
AU  - Birch, Thomas Haagen
AU  - Ploug, Rasmus
AU  - Iversen, Niels Elkjær
AU  - Knott, Arnold
T2  - AES Convention 132
M1  - Paper 8631
PY  - 2012
DA  - 2012/04/06
UR  - https://aes.org/publications/elibrary-page/?id=16269
PB  - Audio Engineering Society
LA  - en
AB  - Self oscillating switch mode power amplifiers are known to be susceptible to interchannel disturbances also known as crosstalk. This phenomenon has a significant impact on the performance of an amplifier of this type. The goal of this paper is to investigate the presence and origins of crosstalk in a two channel self oscillating switch mode power amplifier (class D). A step by step reduction of elements in an amplifier built for this task, is used for methodically determining the actual presence and origins of crosstalk. The investigation shows that the crosstalk is caused by couplings in the self oscillating pulse width modulation circuits, but also that the output filter has a major impact on the level of crosstalk.
ER  -