SLOS794B September   2012  – September 2015 TPA3110D2-Q1


  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  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 DC Characteristics
    6. 6.6 DC Characteristics
    7. 6.7 AC Characteristics
    8. 6.8 AC Characteristics
    9. 6.9 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 DC Detect
      2. 7.3.2 Short-Circuit Protection and Automatic Recovery Feature
      3. 7.3.3 Thermal Protection
      4. 7.3.4 GVDD Supply
    4. 7.4 Device Functional Modes
      1. 7.4.1 PBTL Select
      2. 7.4.2 Gain Setting Through GAIN0 and GAIN1 Inputs
      3. 7.4.3 SD Operation
      4. 7.4.4 PLIMIT
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. TPA3110D2-Q1 Modulation Scheme
        2. Ferrite Bead Filter Considerations
        3. Efficiency: LC Filter Required With the Traditional Class-D Modulation Scheme
        4. When to Use an Output Filter for EMI Suppression
        5. Input Resistance
        6. Input Capacitor, CI
        7. BSN and BSP Capacitors
        8. Differential Inputs
        9. Using Low-ESR Capacitors
      3. 8.2.3 Application Curve
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C2
  • 15-W/ch Into 8-Ω Loads at 10% THD+N From a 16-V Supply
  • 10-W/ch Into 8-Ω Loads at 10% THD+N From a 13-V Supply
  • 30-W Into a 4-Ω Mono Load at 10% THD+N From a 16-V Supply
  • 90% Efficient Class-D Operation Eliminates Need for Heat Sinks
  • Wide Supply Voltage Range Allows Operation from 8 V to 26 V
  • Filter-Free Operation
  • SpeakerGuard™ Protection Circuitry Includes Adjustable Power Limiter Plus DC Protection
  • Flow Through Pin Out Facilitates Easy Board Layout
  • Robust Pin-to-Pin Short-Circuit Protection and Thermal Protection with Auto Recovery Option
  • Excellent THD+N and Pop-Free Performance
  • Four Selectable Fixed Gain Settings
  • Differential Inputs

2 Applications

  • Automotive Noise Generation for HEV/EV
  • Automotive Emergency Call Systems (eCall)
  • Automotive Infotainment Systems (i.e. Head Unit, Connectivity Gateway, Cluster, Telematics, Navigation)
  • ADAS Noise Generation for Blind Spot Detection, Security and Alarm Systems
  • Professional Audio Equipment (Performance Amplifiers, Premium Microphones)
  • Aerospace and Aviation Audio Systems

3 Description

The TPA3110D2-Q1 is a 15-W (per channel) efficient, Class-D audio power amplifier for driving bridged-tied stereo speakers. Advanced EMI suppression technology enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements. SpeakerGuard protection circuitry includes an adjustable power limiter and a DC detection circuit. The adjustable power limiter allows the user to set a virtual voltage rail lower than the chip supply to limit the amount of current through the speaker. The DC detect circuit measures the frequency and amplitude of the PWM signal and shuts off the output stage if the input capacitors are damaged or shorts exist on the inputs.

The TPA3110D2-Q1 can drive stereo speakers as low as 4 Ω. The high efficiency of the device, 90%, eliminates the need for an external heat sink when playing music.

The outputs are also fully protected against shorts to GND, VCC, and output-to-output. The short-circuit protection and thermal protection includes an auto-recovery feature.

Device Information(1)

TPA3110D2-Q1 HTSSOP (28) 9.70 mm × 4.40 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

TPA3110D2-Q1 Simplified Application Schematic

TPA3110D2-Q1 sim_app_cir_los528.gif

4 Revision History

Changes from A Revision (December 2012) to B Revision

  • Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information sectionGo

Changes from * Revision (September, 2012) to A Revision

  • Changed TA from 25°C to –40°C to 125°C in DC and AC Characteristics tables.Go