Conference paper
A high power switch-mode power audio amplifier
In
Proceedings of 146th Audio Engineering Society International Convention
—
2019
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.
| Language: | English |
|---|---|
| Publisher: | Audio Engineering Society |
| Year: | 2019 |
| Proceedings: | 146th Audio Engineering Society Convention |
| Types: | Conference paper |
| ORCIDs: | Iversen, Niels Elkjær and Petersen, Lars Press |
