SLASEA8A February 2016  – October 2016 TPA3255

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  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 Electrical Characteristics
    6. 7.6 Audio Characteristics (BTL)
    7. 7.7 Audio Characteristics (SE)
    8. 7.8 Audio Characteristics (PBTL)
    9. 7.9 Typical Characteristics, BTL Configuration
    10. 7.10Typical Characteristics, SE Configuration
    11. 7.11Typical Characteristics, PBTL Configuration
  8. Parameter Measurement Information
  9. Detailed Description
    1. 9.1Overview
    2. 9.2Functional Block Diagrams
    3. 9.3Feature Description
      1. 9.3.1Error Reporting
    4. 9.4Device Functional Modes
      1. 9.4.1Device Protection System
        1. 9.4.1.1Overload and Short Circuit Current Protection
        2. 9.4.1.2Signal Clipping and Pulse Injector
        3. 9.4.1.3DC Speaker Protection
        4. 9.4.1.4Pin-to-Pin Short Circuit Protection (PPSC)
        5. 9.4.1.5Overtemperature Protection OTW and OTE
        6. 9.4.1.6Undervoltage Protection (UVP) and Power-on Reset (POR)
        7. 9.4.1.7Fault Handling
        8. 9.4.1.8Device Reset
  10. 10Application and Implementation
    1. 10.1Application Information
    2. 10.2Typical Applications
      1. 10.2.1Stereo BTL Application
        1. 10.2.1.1Design Requirements
        2. 10.2.1.2Detailed Design Procedures
          1. 10.2.1.2.1Decoupling Capacitor Recommendations
          2. 10.2.1.2.2PVDD Capacitor Recommendation
          3. 10.2.1.2.3PCB Material Recommendation
          4. 10.2.1.2.4Oscillator
      2. 10.2.2Application Curves
      3. 10.2.3Typical Application, Single Ended (1N) SE
        1. 10.2.3.1Design Requirements
        2. 10.2.3.2Detailed Design Procedures
        3. 10.2.3.3Application Curves
      4. 10.2.4Typical Application, Differential (2N) PBTL
        1. 10.2.4.1Design Requirements
        2. 10.2.4.2Detailed Design Procedures
        3. 10.2.4.3Application Curves
  11. 11Power Supply Recommendations
    1. 11.1Power Supplies
      1. 11.1.1VDD Supply
      2. 11.1.2GVDD_X Supply
      3. 11.1.3PVDD Supply
    2. 11.2Powering Up
    3. 11.3Powering Down
    4. 11.4Thermal Design
      1. 11.4.1Thermal Performance
      2. 11.4.2Thermal Performance with Continuous Output Power
      3. 11.4.3Thermal Performance with Non-Continuous Output Power
  12. 12Layout
    1. 12.1Layout Guidelines
    2. 12.2Layout Examples
      1. 12.2.1BTL Application Printed Circuit Board Layout Example
      2. 12.2.2SE Application Printed Circuit Board Layout Example
      3. 12.2.3PBTL Application Printed Circuit Board Layout Example
  13. 13Device and Documentation Support
    1. 13.1Documentation Support
    2. 13.2Receiving Notification of Documentation Updates
    3. 13.3Community Resources
    4. 13.4Trademarks
    5. 13.5Electrostatic Discharge Caution
    6. 13.6Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Orderable Information

Features

  • Differential Analog Inputs
  • Total Output Power at 10%THD+N
    • 315-W Stereo into 4 Ω in BTL Configuration
    • 185-W Stereo into 8 Ω in BTL Configuration
    • 600-W Mono into 2 Ω in PBTL Configuration
  • Total Output Power at 1%THD+N
    • 260-W Stereo into 4 Ω in BTL Configuration
    • 150-W Stereo into 8 Ω in BTL Configuration
    • 480-W Mono into 2 Ω in PBTL Configuration
  • Advanced Integrated Feedback Design with High-speed Gate Driver Error Correction
    (PurePath™ Ultra-HD)
    • Signal Bandwidth up to 100 kHz for High Frequency Content From HD Sources
    • Ultra Low 0.006% THD+N at 1 W into 4 Ω and <0.01% THD+N to Clipping
    • >65 dB PSRR (BTL, 1 kHz, No Input Signal)
    • <85 µV (A-Weighted) Output Noise
    • >111 dB (A Weighted) SNR
  • Multiple Configurations Possible:
    • Stereo, Mono, 2.1 and 4xSE
  • Click and Pop Free Startup and Stop
  • 90% Efficient Class-D Operation (4 Ω)
  • Wide 18-V to 53.5V Supply Voltage Operation
  • Self-Protection Design (Including Undervoltage, Overtemperature, Clipping, and Short Circuit Protection) With Error Reporting
  • EMI Compliant When Used With Recommended System Design

Applications

  • Blu-Ray Disc™ / DVD Receivers
  • High End HTiB Systems
  • AV Receivers
  • High End Soundbar
  • Mini Combo Systems
  • Active Speakers and Subwoofers

Description

TPA3255 is a high performance class-D power amplifier that enables true premium sound quality with class-D efficiency. It features an advanced integrated feedback design and proprietary high-speed gate driver error correction (PurePath™ Ultra-HD). This technology allows ultra low distortion across the audio band and superior audio quality. The device is operated in AD-mode, and can drive up to 2 x 315 W into 4-Ω load at 10% THD and 2 x 150 W unclipped into 8-Ω load and features a 2 VRMS analog input interface that works seamlessly with high performance DACs such as TI's PCM5242. In addition to excellent audio performance, TPA3255 achieves both high power efficiency and very low power stage idle losses below 2.5W. This is achieved through the use of 85 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
TPA3255HTSSOP (44)6.10 mm x 14.00 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Simplified Schematic

TPA3255 FrontPageDiagram.gif

Total Harmonic Distortion

TPA3255 D000_SLASEA8.gif