SLASE40D May 2015  – April 2016 TPA3251

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 Protection System
      1. 9.4.1Overload and Short Circuit Current Protection
      2. 9.4.2DC Speaker Protection
      3. 9.4.3Pin-to-Pin Short Circuit Protection (PPSC)
      4. 9.4.4Overtemperature Protection OTW and OTE
      5. 9.4.5Undervoltage Protection (UVP) and Power-on Reset (POR)
      6. 9.4.6Fault Handling
      7. 9.4.7Device 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. 11.2Powering Up
    3. 11.3Powering Down
  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. 13.2Community Resources
    3. 13.3Trademarks
    4. 13.4Electrostatic Discharge Caution
    5. 13.5Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Orderable Information

1 Features

  • Differential Analog Inputs
  • Total Output Power at 10%THD+N
    • 175-W Stereo into 4 Ω in BTL Configuration
    • 220-W Stereo into 3 Ω in BTL Configuration
    • 350-W Mono into 2 Ω in PBTL Configuration
  • Total Output Power at 1%THD+N
    • 140-W Stereo into 4 Ω in BTL Configuration
    • 175-W Stereo into 3 Ω in BTL Configuration
    • 285-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 0.005% THD+N at 1 W into 4 Ω and <0.01% THD+N to Clipping
    • 60 dB PSRR (BTL, No Input Signal)
    • <60 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 12-V to 36-V 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

2 Applications

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

3 Description

TPA3251 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 can drive up to 2 x 175 W into 4-Ω load and 2 x 220 W into 3-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, TPA3251 achieves both high power efficiency and very low power stage idle losses below 1 W. This is achieved through the use of 60 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)
TPA3251HTSSOP (44)6.10mm x 14.00mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Simplified Schematic

TPA3251 FrontPageDiagram.gif

Total Harmonic Distortion

TPA3251 D000_SLASE40.gif