A Comparison of Phase-Shift Self-Oscillating and Carrier-Based PWM Modulation for Embedded Audio Amplifiers

Huffenus A, Pillonnet G, Abouchi N, Goutti F. A Comparison of Phase-Shift Self-Oscillating and Carrier-Based PWM Modulation for Embedded Audio Amplifiers. In: AES Convention 128. Audio Engineering Society; 2010. Paper 8127. Available from: https://aes.org/publications/elibrary-page/?id=15424

@inproceedings{Huffenus2010_15424,
  author = {Huffenus, Alexandre and Pillonnet, Gaël and Abouchi, Nacer and Goutti, Frédéric},
  title = {{A Comparison of Phase-Shift Self-Oscillating and Carrier-Based PWM Modulation for Embedded Audio Amplifiers}},
  booktitle = {AES Convention 128},
  note = {Paper 8127},
  year = {2010},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15424}
}

TY  - CPAPER
TI  - A Comparison of Phase-Shift Self-Oscillating and Carrier-Based PWM Modulation for Embedded Audio Amplifiers
AU  - Huffenus, Alexandre
AU  - Pillonnet, Gaël
AU  - Abouchi, Nacer
AU  - Goutti, Frédéric
T2  - AES Convention 128
M1  - Paper 8127
PY  - 2010
DA  - 2010/05/06
UR  - https://aes.org/publications/elibrary-page/?id=15424
PB  - Audio Engineering Society
LA  - en
AB  - This paper compares two modulation schemes for Class-D amplifiers: Phase-Shift Self-Oscillating (PSSO) and Carrier-Based Pulse Width Modulation (PWM). Theoretical analysis (modulation, frequency of oscillation, bandwidth…), design procedure, and IC silicon evaluation will be shown for mono and stereo operation (on the same silicon die) on both structures. The design of both architectures will use as many identical building blocks as possible, to provide a fair, “all else being equal”, comparison. THD+N performance and idle consumption went from 0.02% and 5.6mA in PWM to 0.007% and 5.2mA in Self-Oscillating. Other advantages and drawbacks of the Self-Oscillating structure will be explained and compared to the classical Carrier-Based PWM one, with a focus on battery-powered applications.
ER  -