Derivation and Analysis of a Low-Cost, High-performance Analogue BPCM Control Scheme for Class-D Audio Power Amplifiers

Andersen MAE, Høyerby MCW. Derivation and Analysis of a Low-Cost, High-performance Analogue BPCM Control Scheme for Class-D Audio Power Amplifiers. In: AES Conference: 27th International Conference: Efficient Audio Power Amplification. Audio Engineering Society; 2005. Paper 3-4. Available from: https://aes.org/publications/elibrary-page/?id=13260

@inproceedings{Andersen2005_13260,
  author = {Andersen, Michael A. E. and Høyerby, Mikkel C. W.},
  title = {{Derivation and Analysis of a Low-Cost, High-performance Analogue BPCM Control Scheme for Class-D Audio Power Amplifiers}},
  booktitle = {AES Conference: 27th International Conference: Efficient Audio Power Amplification},
  note = {Paper 3-4},
  year = {2005},
  month = sep,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13260}
}

TY  - CPAPER
TI  - Derivation and Analysis of a Low-Cost, High-performance Analogue BPCM Control Scheme for Class-D Audio Power Amplifiers
AU  - Andersen, Michael A. E.
AU  - Høyerby, Mikkel C. W.
T2  - AES Conference: 27th International Conference: Efficient Audio Power Amplification
M1  - Paper 3-4
PY  - 2005
DA  - 2005/09/06
UR  - https://aes.org/publications/elibrary-page/?id=13260
PB  - Audio Engineering Society
LA  - en
AB  - This paper presents a low-cost analogue control scheme for class-D audio power amplifiers. The scheme is based around bandpass current-mode (BPCM) control, and provides ample stability margins and low distortion over a wide range of operating conditions. Implementation is very simple and does not require the use of operational amplifiers. Small-signal behavior of the controller is accurately predicted, and design is carried out using standard transfer function based linear control methodology. Effectiveness of the approach is demonstrated via a 60W/8W single-ended switching amplifier with THD+N of typically 0.02%.
ER  -