Minimizing Crosstalk in Self Oscillating Switch Mode Audio Power Amplifiers

Ploug RO, Knott A. Minimizing Crosstalk in Self Oscillating Switch Mode Audio Power Amplifiers. In: AES Conference: 48th International Conference: Automotive Audio. Audio Engineering Society; 2012. Paper 3-2. Available from: https://aes.org/publications/elibrary-page/?id=16425

@inproceedings{Ploug2012_16425,
  author = {Ploug, Rasmus Overgaard and Knott, Arnold},
  title = {{Minimizing Crosstalk in Self Oscillating Switch Mode Audio Power Amplifiers}},
  booktitle = {AES Conference: 48th International Conference: Automotive Audio},
  note = {Paper 3-2},
  year = {2012},
  month = sep,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16425}
}

TY  - CPAPER
TI  - Minimizing Crosstalk in Self Oscillating Switch Mode Audio Power Amplifiers
AU  - Ploug, Rasmus Overgaard
AU  - Knott, Arnold
T2  - AES Conference: 48th International Conference: Automotive Audio
M1  - Paper 3-2
PY  - 2012
DA  - 2012/09/06
UR  - https://aes.org/publications/elibrary-page/?id=16425
PB  - Audio Engineering Society
LA  - en
AB  - The varying switching frequencies of self oscillating switch mode audio amplifiers have been known to cause interchannel intermodulation disturbances in multi channel configurations. This crosstalk phenomenon has a negative impact on the audio performance. The goal of this paper is to present a method to minimize this phenomenon by improving the integrity of the various power distribution systems of the amplifier. The method is then applied to an amplifier built for this investigation. The results show that the crosstalk is suppressed with 30 dB, but is not entirely eliminated by the implementation presented. Future work could include further refinement of the implementation of the concepts, electromagnetic interference investigations or PCB design.
ER  -