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 language | English |
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Title of host publication | Proceedings of 146th Audio Engineering Society International Convention |
Publisher | Audio Engineering Society |
Publication date | 2019 |
Publication status | Published - 2019 |
Event | 146th Audio Engineering Society Convention - The Convention Centre Dublin, Dublin , Ireland Duration: 20 Mar 2019 → 23 Mar 2019 Conference number: 146 |
Conference
Conference | 146th Audio Engineering Society Convention |
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Number | 146 |
Location | The Convention Centre Dublin |
Country/Territory | Ireland |
City | Dublin |
Period | 20/03/2019 → 23/03/2019 |