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
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.