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A. Yamauchi, A. Knott, IV. H.. Jørgensen, and MI. E.. Andersen, "Efficiency Optimization in Class-D Audio Amplifiers," Paper 9286, (2015 May.). doi: A. Yamauchi, A. Knott, IV. H.. Jørgensen, and MI. E.. Andersen, "Efficiency Optimization in Class-D Audio Amplifiers," Paper 9286, (2015 May.). doi:
Abstract: This paper presents a new power efficiency optimization routine for designing Class-D audio amplifiers. The proposed optimization procedure finds design parameters for the power stage and the output filter, and the optimum switching frequency such that the weighted power losses are minimized under the given constraints. The optimization routine is applied to minimize the power losses in a 130 W class-D audio amplifier based on consumer behavior investigations, where the amplifier operates at idle and low power levels most of the time. Experimental results demonstrate that the optimization method can lead to around 30% of efficiency improvement at 1.3 W output power without significant effects both on the audio performances and on the efficiency at high power levels.

@article{yamauchi2015efficiency,
author={yamauchi, akira and knott, arnold and jørgensen, ivan h. h. and andersen, michael a. e.},
journal={journal of the audio engineering society},
title={efficiency optimization in class-d audio amplifiers},
year={2015},
volume={},
number={},
pages={},
doi={},
month={may},} @article{yamauchi2015efficiency,
author={yamauchi, akira and knott, arnold and jørgensen, ivan h. h. and andersen, michael a. e.},
journal={journal of the audio engineering society},
title={efficiency optimization in class-d audio amplifiers},
year={2015},
volume={},
number={},
pages={},
doi={},
month={may},
abstract={this paper presents a new power efficiency optimization routine for designing class-d audio amplifiers. the proposed optimization procedure finds design parameters for the power stage and the output filter, and the optimum switching frequency such that the weighted power losses are minimized under the given constraints. the optimization routine is applied to minimize the power losses in a 130 w class-d audio amplifier based on consumer behavior investigations, where the amplifier operates at idle and low power levels most of the time. experimental results demonstrate that the optimization method can lead to around 30% of efficiency improvement at 1.3 w output power without significant effects both on the audio performances and on the efficiency at high power levels.},}

TY - paper
TI - Efficiency Optimization in Class-D Audio Amplifiers
SP - EP -
AU - Yamauchi, Akira
AU - Knott, Arnold
AU - Jørgensen, Ivan H. H.
AU - Andersen, Michael A. E.
PY - 2015
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - May 2015 TY - paper
TI - Efficiency Optimization in Class-D Audio Amplifiers
SP - EP -
AU - Yamauchi, Akira
AU - Knott, Arnold
AU - Jørgensen, Ivan H. H.
AU - Andersen, Michael A. E.
PY - 2015
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - May 2015
AB - This paper presents a new power efficiency optimization routine for designing Class-D audio amplifiers. The proposed optimization procedure finds design parameters for the power stage and the output filter, and the optimum switching frequency such that the weighted power losses are minimized under the given constraints. The optimization routine is applied to minimize the power losses in a 130 W class-D audio amplifier based on consumer behavior investigations, where the amplifier operates at idle and low power levels most of the time. Experimental results demonstrate that the optimization method can lead to around 30% of efficiency improvement at 1.3 W output power without significant effects both on the audio performances and on the efficiency at high power levels.