Real-Time Power Supply Feedback Reduces Power Conversion Requirements For Digital Class D Amplifiers

Boudreaux R. Real-Time Power Supply Feedback Reduces Power Conversion Requirements For Digital Class D Amplifiers. In: AES Conference: 27th International Conference: Efficient Audio Power Amplification. Audio Engineering Society; 2005. Paper 3-2. Available from: https://aes.org/publications/elibrary-page/?id=13271

@inproceedings{Boudreaux2005_13271,
  author = {Boudreaux, Randy},
  title = {{Real-Time Power Supply Feedback Reduces Power Conversion Requirements For Digital Class D Amplifiers}},
  booktitle = {AES Conference: 27th International Conference: Efficient Audio Power Amplification},
  note = {Paper 3-2},
  year = {2005},
  month = sep,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13271}
}

TY  - CPAPER
TI  - Real-Time Power Supply Feedback Reduces Power Conversion Requirements For Digital Class D Amplifiers
AU  - Boudreaux, Randy
T2  - AES Conference: 27th International Conference: Efficient Audio Power Amplification
M1  - Paper 3-2
PY  - 2005
DA  - 2005/09/06
UR  - https://aes.org/publications/elibrary-page/?id=13271
PB  - Audio Engineering Society
LA  - en
AB  - The development of real-time power supply feedback for an all-digital Class D PWM amplifier enables the use of many different power conversion techniques allowing a greater number of alternatives to meet system demand requirements. With a typical voltage ripple rejection of 40dB at 60Hz, an all-digital PWM amplifier with this PSR compensation can achieve better than 105dB system dynamic range and a total harmonic distortion plus noise measurement of 0.1%. The system performance of the real-time PSR feedback is discussed and evaluated for a half-bridge and full-bridge amplifier output stage powered from a low cost unregulated linear power supply.
ER  -