Efficient performance simulation of class D amplifier output stages

Straightforward simulation of amplifier distortion involves transient simulation of operation on a sine wave input signal, and a subsequent FFT of the output voltage. This approach is very slow on class D amplifiers, since the switching behavior forces simulation time steps that are many orders of m...

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Bibliographische Detailangaben
Hauptverfasser: Nyboe, F., Risbo, L., Andreani, P.
Format: Tagungsbericht
Sprache:eng
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Beschreibung
Zusammenfassung:Straightforward simulation of amplifier distortion involves transient simulation of operation on a sine wave input signal, and a subsequent FFT of the output voltage. This approach is very slow on class D amplifiers, since the switching behavior forces simulation time steps that are many orders of magnitude smaller than the duration of one period of an audio sine wave. This work presents a method of simulating the amplifier transfer characteristic using a minimum amount of simulation time, and then deriving THD from the results.
DOI:10.1109/NORCHP.2005.1596982