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How can measure Class-D output power

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Harshitpatel

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I am design Class-D amplifier circuit by using MAX9700 or TPA2005. I want to measure output power of it on 8 ohm speaker. So how can I measure output power of such class-D amplifier
 

Measuring output power without some kind of specification for the maximum distortion will not be very useful for an audio amplifier.

Alex
 

Can measure output power by integrating the power across the load (after output filter) and dividing by integration period according to E=integral(P)/t=integral(IV)/t (eg. integ(V("/OUT")*I("/R0/PLUS") 0 1e-3 ))/1e-3), or using rms to calculate (eg. rms(V("/OUT"))**2/rload). With single supply, need DC blocking capacitor in filter to get sensible results.
 
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