A high power switch-mode power audio amplifier

Niels Elkjær Iversen, Jóhann S. Björnsson, Patrik Boström, Lars Press Petersen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Switch-mode power audio amplifiers, also known as class-D, have become the conventional choice for high power applications. This paper presents the considerations for designing a high power audio amplifier power stage. This includes an overview of loss mechanism including reverse recovery losses which are increasingly important at higher output powers. A 4 kW prototype amplifier is implemented. Absolute maximum ratings shows up to +/- 190 V output voltage swing and 6.5 kW for sine wave burst. THD+N levels go down to 0.003 % for 100 Hz and are generally below 0.1 % up to clipping at 4 kW in a 4 Ω load.
Original languageEnglish
Title of host publicationProceedings of 146th Audio Engineering Society International Convention
PublisherAudio Engineering Society
Publication date2019
Publication statusPublished - 2019
Event146th Audio Engineering Society International Pro Audio Convention - The Convention Centre Dublin, Dublin , Ireland
Duration: 20 Mar 201923 Mar 2019
Conference number: 146

Conference

Conference146th Audio Engineering Society International Pro Audio Convention
Number146
LocationThe Convention Centre Dublin
CountryIreland
CityDublin
Period20/03/201923/03/2019
SeriesAes 146th International Convention

Cite this

Iversen, N. E., Björnsson, J. S., Boström, P., & Petersen, L. P. (2019). A high power switch-mode power audio amplifier. In Proceedings of 146th Audio Engineering Society International Convention Audio Engineering Society. Aes 146th International Convention
Iversen, Niels Elkjær ; Björnsson, Jóhann S. ; Boström, Patrik ; Petersen, Lars Press. / A high power switch-mode power audio amplifier. Proceedings of 146th Audio Engineering Society International Convention. Audio Engineering Society, 2019. (Aes 146th International Convention).
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title = "A high power switch-mode power audio amplifier",
abstract = "Switch-mode power audio amplifiers, also known as class-D, have become the conventional choice for high power applications. This paper presents the considerations for designing a high power audio amplifier power stage. This includes an overview of loss mechanism including reverse recovery losses which are increasingly important at higher output powers. A 4 kW prototype amplifier is implemented. Absolute maximum ratings shows up to +/- 190 V output voltage swing and 6.5 kW for sine wave burst. THD+N levels go down to 0.003 {\%} for 100 Hz and are generally below 0.1 {\%} up to clipping at 4 kW in a 4 Ω load.",
author = "Iversen, {Niels Elkj{\ae}r} and Bj{\"o}rnsson, {J{\'o}hann S.} and Patrik Bostr{\"o}m and Petersen, {Lars Press}",
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Iversen, NE, Björnsson, JS, Boström, P & Petersen, LP 2019, A high power switch-mode power audio amplifier. in Proceedings of 146th Audio Engineering Society International Convention. Audio Engineering Society, Aes 146th International Convention, 146th Audio Engineering Society International Pro Audio Convention, Dublin , Ireland, 20/03/2019.

A high power switch-mode power audio amplifier. / Iversen, Niels Elkjær; Björnsson, Jóhann S.; Boström, Patrik; Petersen, Lars Press.

Proceedings of 146th Audio Engineering Society International Convention. Audio Engineering Society, 2019. (Aes 146th International Convention).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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AU - Boström, Patrik

AU - Petersen, Lars Press

PY - 2019

Y1 - 2019

N2 - Switch-mode power audio amplifiers, also known as class-D, have become the conventional choice for high power applications. This paper presents the considerations for designing a high power audio amplifier power stage. This includes an overview of loss mechanism including reverse recovery losses which are increasingly important at higher output powers. A 4 kW prototype amplifier is implemented. Absolute maximum ratings shows up to +/- 190 V output voltage swing and 6.5 kW for sine wave burst. THD+N levels go down to 0.003 % for 100 Hz and are generally below 0.1 % up to clipping at 4 kW in a 4 Ω load.

AB - Switch-mode power audio amplifiers, also known as class-D, have become the conventional choice for high power applications. This paper presents the considerations for designing a high power audio amplifier power stage. This includes an overview of loss mechanism including reverse recovery losses which are increasingly important at higher output powers. A 4 kW prototype amplifier is implemented. Absolute maximum ratings shows up to +/- 190 V output voltage swing and 6.5 kW for sine wave burst. THD+N levels go down to 0.003 % for 100 Hz and are generally below 0.1 % up to clipping at 4 kW in a 4 Ω load.

M3 - Article in proceedings

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Iversen NE, Björnsson JS, Boström P, Petersen LP. A high power switch-mode power audio amplifier. In Proceedings of 146th Audio Engineering Society International Convention. Audio Engineering Society. 2019. (Aes 146th International Convention).