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Design >> Mixed-Signal Design >> Experience on design and simulation of class-d audio power amplifiers?
https://designers-guide.org/forum/YaBB.pl?num=1260806146

Message started by weber8722 on Dec 14^th, 2009, 7:55am

Title: Experience on design and simulation of class-d audio power amplifiers?
Post by weber8722 on Dec 14^th, 2009, 7:55am

Hi,

has anybody experience on the design and performance simulation (distortion, frequency response, stability, noise) of class-d audio power amplifiers? E.g. on hysterisis-based self-oscillating circuits vs classical pwm-based systems?
I wonder also if transient simulation is an effective method due to large simulation times and limited accuracy. I tried steady-state methods but the results are not meaningful. I wonder if pss/qpss can be applied as succesful as in RF applications? :-/

Bye Stephan

Title: Re: Experience on design and simulation of class-d audio power amplifiers?
Post by pancho_hideboo on Dec 14^th, 2009, 8:07am

weber8722 wrote on Dec 14^th, 2009, 7:55am:

I tried steady-state methods but the results are not meaningful.
I wonder if pss/qpss can be applied as succesful as in RF applications?

PSS/QPSS is Steady State Analysis.
What do you mean by "steady-state methods" ?

I think PSS/QPSS is useful for Class-D amplifier simulation. But it is fairly limited regarding applicable sutuations.

I'm not so familiar with audio applications.
But my colleagues who are engaged in audio applications use Transient Analysis with Transient Noise Ability by following simulator.

BDA's Analog FastSPICE.
http://www.berkeley-da.com/prod/oview.htm