The TAS5631B is a high-performance PWM input class-D amplifier with integrated closed-loop feedback technology (known as PurePath HD technology) with the ability to drive up to 300 W (1) stereo into 4-Ω to 8-Ω speakers from a single 50-V supply.

PurePath HD technology enables traditional AB-amplifier performance (<0.03% THD) levels while providing the power efficiency of traditional class-D amplifiers.

Unlike traditional class-D amplifiers, the distortion curve does not increase until the output levels move into clipping.

PurePath HD technology enables lower idle losses, making the device even more efficient.

• PurePath™ HD Enabled Integrated Feedback Provides:
  • Signal Bandwidth up to 80 kHz for High-Frequency Content From HD Sources
  • Ultralow 0.03% THD at 1 W Into 4 Ω
  • Flat THD at All Frequencies for Natural Sound
  • 80-dB PSRR (BTL, No Input Signal)
  • >100-dB (A-weighted) SNR
  • Click- and Pop-Free Start-Up
• Multiple Configurations Possible on the Same PCB With Stuffing Options:
  • Mono Parallel Bridge-Tied Load (PBTL)
  • Stereo Bridge-Tied Load (BTL)
  • 2.1 Single-Ended Stereo Pair and Bridge-Tied Load Subwoofer
  • Quad Single-Ended Outputs
• Total Output Power at 10% THD+N
  • 400 W per Channel in Mono PBTL Configuration
  • 300 W per Channel in Stereo BTL Configuration
  • 145 W per Channel in Quad Single-Ended Configuration
• High-Efficiency Power Stage (>88%) With 60-mΩ Output MOSFETs
• Two Thermally Enhanced Package Options:
  • PHD (64-Pin QFP)
  • DKD (44-Pin PSOP3)
• Self-Protection Design (Including Undervoltage, Overtemperature, Clipping, and Short-Circuit Protection) With Error Reporting
• EMI Compliant When Used With Recommended System Design
• APPLICATIONS
  • Mini Combo System
  • AV Receivers
  • DVD Receivers
  • Active Speakers

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