TPA3132D2 (TPA3116/TPA3118) Burn-In - continuous output power test 50W

TPA3132D2 Class-D Amplifier by 360customs.de http://www.360customs.de/2014/11/tpa3132d2-minimal-5050w/ Ideal: TPA3132 = 8R/(8R+0R12+0R12) = 0.97 = 97% TA = 18°C Pout = 50W Efficiency: (n) = 97% Rth_JA = 31K/W Pdiss = (50W / 0.97) - 50W = 1.54W TC = TA + Pdiss * Rth_JA = 18°C + 1.54W * 31K/W = 66°C Well, we wont have that 97% in practice, so lets assume 92%: Pdiss = (50W / 0.92) - 50W = 4.34W TC = TA + Pdiss * Rth_JA = 18°C + 4.34W * 31K/W = 152.54°C For 140°C: Pout(TC)=