TAS5631B Datasheet, PDF (1/32 Pages) Texas Instruments – 300-W STEREO / 600-W MONO PurePath HD DIGITAL-INPUT POWER STAGE

TAS5631B
www.ti.com
SLES263 – NOVEMBER 2010
300-W STEREO / 600-W MONO PurePath™ HD DIGITAL-INPUT POWER STAGE
Check for Samples: TAS5631B
FEATURES
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•23 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
– 600 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
APPLICATIONS
• Mini Combo System
• AV Receivers
• DVD Receivers
• Active Speakers
DESCRIPTION
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™
PurePath HD technology enables lower idle losses,
making the device even more efficient.
Note 1. Achievable output power levels are
dependent on the thermal configuration of the target
application. A high-performance thermal interface
material between the package exposed heat slug
and the heat sink should be used to achieve high
output-power levels.
DIGITAL
AUDIO
INPUT
TAS5518C
Digital PWM
Processor
PurePath^TM HD
TAST5A6S350631B
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PurePath HD is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010, Texas Instruments Incorporated