Efficient performance simulation of class D amplifier output stages

Summary, in English

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.

• Author: Flemming Nyboe; Lars Risbo; Pietro Andreani
• Publishing year: 2005
• Language: English
• Pages: 32-35
• Publication/Series: 23rd NORCHIP Conference, 2005.
• Links: http://ieeexplore.ieee.org/iel5/10643/33584/01596982.pdf?tp=&isnumber=33584&arnumber=1596982&punumber=10643; http://dx.doi.org/10.1109/NORCHP.2005.1596982
• Document type: Conference paper
• Topic: Electrical Engineering, Electronic Engineering, Information Engineering
• Status: Published
• ISBN/ISSN/Other: ISBN: 1-4244-0064-3