TPA3255

TPA3255 is the Texas Instruments PurePath Ultra-HD Class-D audio amplifier family — this page is the series entry covering the ordering code listed on this site; a 315-W stereo (4 ohm BTL, 10% THD+N) amplifier delivering 600-W mono into 2 ohms in PBTL configuration (also at 10% THD+N) for high-power home audio, pro AV and soundbar designs. Its advanced integrated feedback with high-speed gate driver error correction holds THD+N to 0.006% at 1 W into 4 ohms with less than 0.01% to clipping, while 111 dB (A-weighted) SNR and sub-85 uV output noise keep the noise floor inaudible in premium systems. 90% Class-D efficiency at 4 ohms shrinks heatsink requirements versus linear stages, and the wide 18-V to 53.5-V supply range simplifies power architecture. Differential analog inputs, click-and-pop-free startup, and self-protection with error reporting (undervoltage, overtemperature, clipping, short circuit) round out a robust design. Selection advice: the complete ordering code listed on this site is the TPA3255DDV (tube; TPA3255DDVR is the tape-and-reel variant) for 0 to 70 C commercial designs — use that product page when your BOM names the complete ordering code; do not confuse this family with the TPA3255-Q1 automotive variant (AEC-Q100, -40 to 105 C). Against the lower-power TPA3250/TPA3251 (36 V max), the TPA3255 is the choice when output power above 175 W per channel is required; confirm BTL versus PBTL configuration and thermal design before layout.