High-performance 175W stereo (BTL) feedback Class-D audio amplifier

This post is sponsored by Texas Instruments. New from Texas Instruments, the TPA3251D2 is a high-performance class-D power amplifier that enables true premium sound quality with class-D efficiency. The device features an advanced integrated feedback design and proprietary high-speed gate driver error correction (PurePath Ultra-HD). This technology allows ultra low distortion across the audio band and superior audio quality. The device can drive up to 2 x 175W into 4ohm load and 2 x 220W into 3ohm load and features a 2 VRMS analog input interface that works seamlessly with high performance DACs such as TI's PCM5242. In addition to exceptional audio performance, the TPA3251D2 achieves both high power efficiency and very low power stage idle losses below 1 W. This is achieved through the use of 60mohm MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations, says the company.