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TAS5631B

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300-W stereo, 400-W mono, 25- to 52.5-V supply, PWM input Class-D audio amplifier

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Data sheet

TAS5631B

ACTIVE
Data sheet Order now

Product details

Audio input type PWM Architecture Class-D Speaker channels (max) 4 Rating Catalog Power stage supply (max) (V) 52.5 Power stage supply (min) (V) 25 Load (min) (Ω) 4 Output power (W) 300 SNR (dB) 103 THD + N at 1 kHz (%) 0.03 Iq (typ) (mA) 24.8 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 10.8 Analog supply voltage (max) (V) 13.2 PSRR (dB) 80 Operating temperature range (°C) 0 to 70
Audio input type PWM Architecture Class-D Speaker channels (max) 4 Rating Catalog Power stage supply (max) (V) 52.5 Power stage supply (min) (V) 25 Load (min) (Ω) 4 Output power (W) 300 SNR (dB) 103 THD + N at 1 kHz (%) 0.03 Iq (typ) (mA) 24.8 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 10.8 Analog supply voltage (max) (V) 13.2 PSRR (dB) 80 Operating temperature range (°C) 0 to 70
HSSOP (DKD) 44 225.78 mm² 15.9 x 14.2 HTQFP (PHD) 64 256 mm² 16 x 16
  • 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

All other trademarks are the property of their respective owners
  • 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

All other trademarks are the property of their respective owners

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.

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.
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Next Generation High Performance, High Resolution Class-D Amplifier (Analog-In) Available

True Ultra-HD sound quality with a low THD+N <0.005% and a bandwidth of up to 100kHz for output levels up to 315W Stereo / 600W Mono: TPA3255

Technical documentation

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Type Title Date
* Data sheet 300-W STEREO / 400 MONO PurePath HD DIGITAL-INPUT POWER STAGE datasheet (Rev. C) 06 Sep 2012
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 26 Aug 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) 27 Jun 2019
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 01 May 2013
User guide A 600-W Input, Isolated PFC Power Supply for AVR Amplifiers. (Rev. C) 20 Sep 2012

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HSSOP (DKD) 44 Ultra Librarian
HTQFP (PHD) 64 Ultra Librarian
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