1 Features
1. 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 AB.
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 BTL
Subwoofer
. Quad Single-Ended Outputs
. Total Output Power at 10% THD+N
. 400 W 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

2 Applications
. Mini Combo System
. AV Receivers
. DVD Receivers
. Active Speakers

3 Description
The TAS5630B device is a high-performance analog-
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. When coupled
with TI’s class-G power-supply reference design for
TAS563x, industry-leading levels of efficiency can be
achieved.