SLAS847A May   2012  – March 2015 TAS5612LA

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Audio Specification Stereo (BTL)
    7. 6.7 Audio Specification 4 Channels (SE)
    8. 6.8 Audio Specification Mono (PBTL)
    9. 6.9 Typical Characteristics
      1. 6.9.1 Typical Characteristics, BTL Configuration
      2. 6.9.2 Typical Characteristics, SE Configuration
      3. 6.9.3 Typical Characteristics, PBTL Configuration
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1  Power Supplies
        1. 7.3.1.1 Boot Strap Supply
      2. 7.3.2  System Power-Up and Power-Down Sequence
        1. 7.3.2.1 Powering Up
        2. 7.3.2.2 Powering Down
      3. 7.3.3  Start-up and Shutdown Ramp Sequence
      4. 7.3.4  Unused Output Channels
      5. 7.3.5  Device Protection System
      6. 7.3.6  Pin-to-Pin Short-Circuit Protection (PPSC)
      7. 7.3.7  Overtemperature Protection
      8. 7.3.8  Overtemperature Warning, OTW
      9. 7.3.9  Undervoltage Protection (UVP) and Power-On Reset (POR)
      10. 7.3.10 Error Reporting
      11. 7.3.11 Fault Handling
      12. 7.3.12 Device Reset
      13. 7.3.13 System Design Consideration
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Typical BTL Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Typical PBTL Configuration
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
      3. 8.2.3 Typical SE Configuration
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
        3. 8.2.3.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 PCB Material Recommendation
      2. 10.1.2 PVDD Capacitor Recommendation
      3. 10.1.3 Decoupling Capacitor Recommendation
      4. 10.1.4 Circuit Component and Printed-Circuit Board Recommendation
        1. 10.1.4.1 Circuit Component Requirements
        2. 10.1.4.2 Printed Circuit Board Requirements
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Trademarks
    2. 11.2 Electrostatic Discharge Caution
    3. 11.3 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • PurePath™ HD Integrated Feedback Provides:
    • 0.05% THD at 1 W Into 4 Ω
    • > 65-dB PSRR (No Input Signal)
    • > 105-dB (A Weighted) SNR
  • Preclipping Output for Control of a Class-G Power Supply
  • Reduced Heat Sink Size Due to Use of 60-mΩ Output MOSFET With > 90% Efficiency at Full Output Power
  • Output Power at 10% THD+N
    • 125-W and 4-Ω BTL Stereo Configuration
    • 250-W and 2-Ω in PBTL Mono Configuration
  • Output Power at 1% THD+N
    • 105-W and 4-Ω BTL Stereo Configuration
    • 55-W and 8-Ω BTL Stereo Configuration
  • Click- and Pop-Free Start-up
  • Error Reporting Self-Protected Design With UVP, Overtemperature, and Short-Circuit Protection
  • EMI Compliant When Used With Recommended System Design
  • 44-Pin HTSSOP (DDV) Package for Reduced Board Size

2 Applications

  • Blu-ray™ and DVD Receivers
  • High-Power Sound Bars
  • Powered Subwoofer and Active Speakers
  • Mini Combo Systems

3 Description

The TAS5612LA is a feature optimized class-D power amplifier based on the TAS5612A.

The TAS5612LA uses large MOSFETs for improved power efficiency and a novel gate drive scheme for reduced losses in idle and at low output signals leading to reduced heat sink size.

The unique preclipping output signal can be used to control a class-G power supply. This combined with the low idle loss and high power efficiency of the TAS5612LA leads to industry-leading levels of efficiency ensuring a super “green” system.

The TAS5612LA uses constant voltage gain. The internally matched gain resistors ensure a high Power Supply Rejection Ratio giving an output voltage only dependent on the audio input voltage and free from any power supply artifacts.

The high integration of the TAS5612LA makes the amplifier easy to use; and, using TI’s reference schematics and PCB layouts leads to fast design in time. The TAS5612LA is available in the space-saving, surface-mount, 44-pin HTSSOP package.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TAS5612LA HTSSOP (44) 14.00 mm × 6.10 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical TAS5612LA Application Block Diagram

TAS5612LA fp_app_las847.gif