SLAS931 October   2017 TAS5634

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Audio Specification Stereo (BTL)
    6. 7.6 Audio Specifications Mono (PBTL)
    7. 7.7 Audio Specification 4 Channels (SE)
    8. 7.8 Electrical Characteristics
    9. 7.9 Typical Characteristics
      1. 7.9.1 BTL Configuration
      2. 7.9.2 PBTL Configuration
      3. 7.9.3 SE Configuration
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagrams
    3. 8.3 Feature Description
      1. 8.3.1  Closed-Loop Architecture
      2. 8.3.2  Power Supplies
        1. 8.3.2.1 BST, Bootstrap Supply
        2. 8.3.2.2 PVDD, Output Stage Power Supply
        3. 8.3.2.3 GVDD, Gate-Drive Power Supply
        4. 8.3.2.4 VDD Supply, Internal Regulators (DVDD and AVDD)
      3. 8.3.3  System Power-Up / Power-Down Sequence
        1. 8.3.3.1 Powering Up
        2. 8.3.3.2 Powering Down
      4. 8.3.4  Startup and Shutdown Ramp Sequence (C_START)
      5. 8.3.5  Device Protection System
      6. 8.3.6  Overload and Short Circuit Current Protection
      7. 8.3.7  DC Speaker Protection
      8. 8.3.8  Pin-To-Pin Short Circuit Protection (PPSC)
      9. 8.3.9  Overtemperature Protection
      10. 8.3.10 Overtemperature Warning, OTW
      11. 8.3.11 Undervoltage Protection (UVP) and Power-On Reset (POR)
      12. 8.3.12 Error Reporting
      13. 8.3.13 Fault Handling
      14. 8.3.14 System Design Consideration
    4. 8.4 Device Functional Modes
      1. 8.4.1 Stereo, Bridge-tied Load (BTL)
      2. 8.4.2 Mono, Paralleled Bridge-tied Load (PBTL)
      3. 8.4.3 4-Channel, Single-ended (SE)
      4. 8.4.4 BD Modulation
      5. 8.4.5 Device Reset
      6. 8.4.6 Unused Output Channels
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Typical BTL Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Pin Connections
        4. 9.2.1.4 Application Curves
      2. 9.2.2 Typical PBTL Configuration
        1. 9.2.2.1 Application Curves
      3. 9.2.3 Typical SE Configuration
        1. 9.2.3.1 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Power Supplies
    2. 10.2 Bootstrap Supply
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 PCB Material Recommendation
      2. 11.1.2 PVDD Capacitor Recommendation
      3. 11.1.3 Decoupling Capacitor Recommendation
      4. 11.1.4 Circuit Component Requirements
      5. 11.1.5 Printed Circuit Board Requirements
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

1 Features

  • PWM-Input, Class-D Amplifier Power Stage compatible with TI Digital-Input (I2S) Audio Processors and Modulators
  • HD Integrated Closed-Loop Feedback provides:
    • 0.025% THD at 1 W into 6 Ω
    • >70 dB PSRR (No Input Signal)
    • >105 dB SNR (A-weighted)
  • Output Power at 10%THD+N
    • 600 W / 3 Ω PBTL Mono Configuration
    • 300 W / 6 Ω BTL Stereo Configuration
    • 230 W / 8 Ω BTL Stereo Configuration
  • Output Power at 1%THD+N
    • 465 W / 3 Ω PBTL Mono Configuration
    • 240 W / 6 Ω BTL Stereo Configuration
    • 180 W / 8 Ω BTL Stereo Configuration
  • Integrated 80 mΩ MOSFETs for Reduced Heatsink Size
    • >91% Efficiency at Full Output Power
    • >75% Efficiency at 1/8 Output Power
  • Click and Pop Free Startup
  • Device Protection: Undervoltage, Over Temperature, Overcurrent, Short Circuit Protection and DC Speaker Protection
  • Pre-Clipping Output Signal for Control of a Class-G Power Supply
  • 44-Pin HTSSOP (DDV) Package with Thermal Pad on the Top

2 Applications

  • Powered Speakers
  • Subwoofers
  • Mini Component Systems
  • Soundbars
  • Professional and Public Address (PA) Speakers

3 Description

The TAS5634 is a PWM-input, Class-D amplifier power stage that supports 2 x 300 W (6 Ω) or 1 x 600 W (3 Ω) output power with a nominal power supply voltage of 58V. The 58V supply voltage provides support for higher impedance speaker loads including 6 Ω in BTL and 3 Ω in PBTL. Integrated MOSFETs and a new gate drive scheme provide high peak efficiency and low idle losses to reduce thermal solution size.

The TAS5634 uses a closed-loop feedback design with constant voltage gain. The internally matched gain resistors ensure a high power supply rejection ratio (PSRR) and low output noise due to switch mode power supplies (SMPS).

The TAS5634 is a fully integrated power stage compatible with TI's portfolio of digital-input (I2S) audio processors and modulators, like the TAS5548 and TAS5558, making it a complete digital-input Class-D amplifier. The TAS5634 is available in the surface mount 44-pin HTSSOP package and is part of a pin-compatible family of PWM-input Class-D power stages including the TAS5612LA, TAS5614LA and TAS5624A. PowerPAD™ PurePath™ HD

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TAS5634 HTSSOP 14.00 mm x 6.10 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

TAS5634 FrontPageApplication.gif

4 Revision History

DATE REVISION NOTES
October 2017 * Initial Public release.