Texas Instruments' TAS5755M are single-chip flexible digital audio solutions with integrated processing that support 2.1 (two speakers + subwoofer), 2.0 or stereo (two speakers), and mono (high power speaker) modes.
Their high efficiency, low 80 mΩ RDSON and pad-up package allow the devices to output up to 2 x 50 W or 1 x 100 W.
Texas Instruments' TAS5755M leverage two full H-bridges which are used for each channel in stereo mode. In 2.1 mode, the TAS5755M run two independent speaker channels using two half-bridges while using a full-bridge to drive a subwoofer. Finally, in mono mode, the TAS5755M support pre-filter parallel bridge-tied load (PBTL) using only one filter stage to reduce total system size and cost.
The TAS5755M have integrated audio processing. It includes signal mixing, DC blocking filters, 2 x 8 + 1 x 2 biquads for equalization. Power limiting is implemented by leveraging a two-band log-style DRC and a separate single-band DRC for the subwoofer channel.