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  • TPA3110D2 15-W Fil ter-Free Stereo Class-D Audio Power Amplifier With Speakerguard™

    • SLOS528F July   2009  – April 2017 TPA3110D2

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  • TPA3110D2 15-W Fil ter-Free Stereo Class-D Audio Power Amplifier With Speakerguard™
  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and F unctions
  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 DC Characteristics: 24 V
    6. 7.6 DC Characteristics: 12 V
    7. 7.7 AC Characteristics: 24 V
    8. 7.8 AC Characteristics: 12 V
    9. 7.9 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 TPA3110D2 Modulation Scheme
        1. 9.3.1.1 Ferrite Bead Filter Considerations
        2. 9.3.1.2 Efficiency: LC Filter Required With The Traditional Class-D Modulation Scheme
        3. 9.3.1.3 When to Use an Output Filter for EMI Suppression
      2. 9.3.2 Gain Setting Via GAIN0 And GAIN1 Inputs
      3. 9.3.3 Differential Inputs
      4. 9.3.4 PLIMIT
      5. 9.3.5 GVDD Supply
      6. 9.3.6 PBTL Select
      7. 9.3.7 Thermal Protection
      8. 9.3.8 DC Detect
      9. 9.3.9 Short-Circuit Protection and Automatic Recovery Feature
    4. 9.4 Device Functional Modes
      1. 9.4.1 SD Operation
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1. 10.2.1 Stereo Class-D Amplifier With BTL Output and Single-Ended Inputs With Power Limiting
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Input Resistance
          2. 10.2.1.2.2 Input Capacitor, CI
          3. 10.2.1.2.3 BSN and BSP Capacitors
          4. 10.2.1.2.4 Using Low-ESR Capacitors
        3. 10.2.1.3 Application Curves
      2. 10.2.2 Stereo Class-D Amplifier With PBTL Output and Single-Ended Input
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
        3. 10.2.2.3 Application Curve
  11. 11Power Supply Recommendations
    1. 11.1 Power Supply Decoupling, CS
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Development Support
    2. 13.2 Documentation Support
      1. 13.2.1 Related Documentation
    3. 13.3 Community Resources
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  14. 14Mechanical, Packaging, and Orderable Information
  15. IMPORTANT NOTICE

Package Options

Mechanical Data (Package|Pins)
  • PWP|28
    • MPDS373B
Thermal pad, mechanical data (Package|Pins)
Orderable Information
  • slos528f_oa
  • slos528f_pm
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    • Full reading width
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    • Expanded reading width
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DATA SHEET

TPA3110D2 15-W Fil ter-Free Stereo Class-D Audio Power Amplifier With Speakerguard™

1 Features

  • 15-W/ch into an 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™ Speaker Protection 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 / Pop-Free Performance
  • Four Selectable, Fixed Gain Settings
  • Differential Inputs

2 Applications

  • Televisions
  • Consumer Audio Equipment

3 Description

The TPA3110D2 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™ speaker 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 can drive stereo speakers as low as 4 Ω. The high efficiency of the TPA3110D2, 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)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPA3110D2 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 Simplified Application Schematic

TPA3110D2 sim_app_cir_los528.gif

4 Revision History

Changes from E Revision (November 2015) to F Revision

  • Added Measurement note added to characterization graphsGo
  • Added New Output Power vs Supply Voltage Characterization graphGo
  • Added footnote for heatsink and EVM Go

Changes from D Revision (July 2012) to E 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 section Go

Changes from C Revision (August 2010) to D Revision

  • Added < 10 V/ms to VI in the Absolute Maximum Ratings table, added Note 2Go
  • Changed the PBTL Select section. Added text - "The voltage slew.......series with the terminals."Go
  • Added a 100kΩ resistor to AVCC Pin 14 and Note 1 to Figure 46Go

Changes from B Revision (July 2010) to C Revision

  • Replaced the Dissipations Ratings table with the Thermal Information tableGo

Changes from A Revision (July 2009) to B Revision

  • Added slew rate adjustment informationGo
  • Added AVCC to Pin 7 of Figure 46Go

Changes from * Revision (July 2009) to A Revision

  • Changed Changed the Stereo Class-D Amplifier with BTL Output and Single-Ended Input illustration Figure 42 - Corrected the pin names.Go
  • Changed Changed the Stereo Class-D Amplifier with PBTL Output and Single-Ended Input illustration Figure 46 - Corrected the pin names.Go

5 Device Comparison Table

DEVICE NUMBER SPEAKER CHANNELS SPEAKER AMP TYPE OUTPUT POWER (W) ADDITIONAL FEATURES
TPA3110D2 Stereo Class D 15 Power limiter
TPA3130D1 Stereo Class D 15
TPA3118D2 Stereo Class D 30 Power limiter
TPA3116D1 Stereo Class D 50 Power limiter

6 Pin Configuration and F unctions

PWP Package
28-Pin HTSSOP With PowerPAD™
Top View
TPA3110D2 PinOut_los528.gif

Table 1. Pin Functions

PIN TYPE DESCRIPTION
NO. NAME
1 SD I Shutdown logic input for audio amp (LOW = outputs Hi-Z, HIGH = outputs enabled). TTL logic levels with compliance to AVCC.
2 FAULT O Open drain output used to display short circuit or dc detect fault status. Voltage compliant to AVCC. Short circuit faults can be set to auto-recovery by connecting FAULT pin to SD pin. Otherwise, both short circuit faults and dc detect faults must be reset by cycling PVCC.
3 LINP I Positive audio input for left channel. Biased at 3 V.
4 LINN I Negative audio input for left channel. Biased at 3 V.
5 GAIN0 I Gain select least significant bit. TTL logic levels with compliance to AVCC.
6 GAIN1 I Gain select most significant bit. TTL logic levels with compliance to AVCC.
7 AVCC P Analog supply
8 AGND — Analog signal ground. Connect to the thermal pad.
9 GVDD O High-side FET gate drive supply. Nominal voltage is 7V. Also should be used as supply for PLIMIT function.
10 PLIMIT I Power limit level adjust. Connect a resistor divider from GVDD to GND to set power limit. Connect directly to GVDD for no power limit.
11 RINN I Negative audio input for right channel. Biased at 3 V.
12 RINP I Positive audio input for right channel. Biased at 3 V.
13 NC — Not connected
14 PBTL I Parallel BTL mode switch
15 PVCCR P Power supply for right channel H-bridge. Right channel and left channel power supply inputs are connect internally.
16 PVCCR P Power supply for right channel H-bridge. Right channel and left channel power supply inputs are connect internally.
17 BSPR I Bootstrap I/O for right channel, positive high-side FET.
18 OUTPR O Class-D H-bridge positive output for right channel.
19 PGND — Power ground for the H-bridges.
20 OUTNR O Class-D H-bridge negative output for right channel.
21 BSNR I Bootstrap I/O for right channel, negative high-side FET.
22 BSNL I Bootstrap I/O for left channel, negative high-side FET.
23 OUTNL O Class-D H-bridge negative output for left channel.
24 PGND — Power ground for the H-bridges.
25 OUTPL O Class-D H-bridge positive output for left channel.
26 BSPL I Bootstrap I/O for left channel, positive high-side FET.
27 PVCCL P Power supply for left channel H-bridge. Right channel and left channel power supply inputs are connect internally.
28 PVCCL P Power supply for left channel H-bridge. Right channel and left channel power supply inputs are connect internally.

 
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