TPA3250 High-Performance Class-D Power Amplifier

Texas Instruments' TPA3250 device is a high-performance, class-D power amplifier that enables true premium sound quality with class-D efficiency. It 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. With a 32 V power supply the device can drive up to 2 W x 130 W peak into a 4 Ω load and 2 W x 70 W continuous into an 8 Ω load and features a 2 V_RMS analog input interface that works seamlessly with high-performance DACs such as TI’s PCM5242. In addition to excellent audio performance, the TPA3250 achieves both high power efficiency and very-low power stage idle losses below 1 W. This is achieved through the use of 60 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.