Abstract
Switch-mode power amplifiers have become the conventional choice for audio amplification due to their very high efficiency and negligible THD+N performance. This paper proposes a new method to determine the reverse recovery loss theoretically. The Spice model from the manufacture is simulated with a Double pulse tester in LTspice. Mapping the reverse recovery behaviour for different currents and time periods allows it to be fitted to a model. The fitted model is used to estimate the reverse recovery loss in a Class-D audio amplifier power stage. The conventional model shows a 16 times larger loss compared to the fitted model for a worst case comparison.
Original language | English |
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Title of host publication | Proceedings of 149th Audio Engineering Society Convention 2020 |
Publisher | Audio Engineering Society |
Publication date | 2020 |
Publication status | Published - 2020 |
Event | 149th Audio Engineering Society Convention - Virtual event Duration: 21 Oct 2020 → 24 Oct 2020 Conference number: 149 |
Conference
Conference | 149th Audio Engineering Society Convention |
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Number | 149 |
Location | Virtual event |
Period | 21/10/2020 → 24/10/2020 |