30-W Stereo (BTL) Class-D Audio Amp w/ SpeakerGuard™


The TPA31xxD2 series are stereo efficient, digital amplifier power stage for driving speakers up to 100W/2Ω in mono. The high efficiency of the TPA3130D2 allows it to do 2x15W without external heat sink on a single layer PCB. The TPA3118D2 can even run 2x30W/8Ω without heat sink on a dual layer PCB. If even higher power is needed the TPA3116D2 does 2x50W/4Ω with a small heat-sink attached to its top side PowerPad. All three devices share the same footprint enabling a single PCB to be used across different power levels.

The TPA31xxD2 advanced oscillator/PLL circuit employs a multiple switching frequency option to avoid AM interferences; this is achieved together with an option of Master/Slave option, making it possible to synchronize multiple devices.

The TPA31xxD2 devices are fully protected against faults with short-circuit protection and thermal protection as well as over-voltage, under-voltage and DC protection. Faults are reported back to the processor to prevent devices from being damaged during overload conditions.


  • Supports Multiple Output Configurations
    • 2×50-W into a 4-Ω BTL Load at 21 V (TPA3116D2)
    • 2×30-W into a 8-Ω BTL Load at 24 V (TPA3118D2)
    • 2×15-W into a 8-Ω BTL Load at 15 V (TPA3130D2)
  • Wide Voltage Range: 4.5 V – 26 V
  • Efficient Class-D Operation
    • >90% Power Efficiency Combined with Low Idle Loss
      Greatly Reduces Heat Sink Size
    • Advanced Modulation Schemes
  • Multiple Switching Frequencies
    • AM Avoidance
    • Master/Slave Synchronization
    • Up to 1.2 MHz Switching Frequency
  • Feedback Power Stage Architecture with High PSRR
    Reduces PSU Requirements
  • Programmable Power Limit
  • Differential/Single-Ended Inputs
  • Stereo and Mono Mode with Single Filter Mono Configuration
  • Single Power Supply Reduces Component Count
  • Integrated Self-Protection Circuits Including Over-Voltage,
    Under-Voltage, Over-Temperature, DC-Detect, and
    Short Circuit with Error Reporting
  • Thermally Enhanced Packages
    • DAD (32-pin HTSSOP Pad-up)
    • DAP (32-pin HTSSOP Pad-down)
  • –40°C to 85°C Ambient Temperature Range

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Parametrics Compare all products in Mid/High-Power Amplifier

Max. Power to Bridge Tied Load
Max. Power to Parallel Bridge Tied Load
Min. Supported Bridge Tied Load
Min. Supported Parallel Bridge Tied Load
Closed/Open Loop
Max Speaker Outputs (#)
Input Type
Control Type
Analog Supply Min [V]
Analog Supply Max [V]
Power Stage Supply Min (V)
Power Stage Supply Max (V)
Operating Temperature Range (C)
Approx. Price (US$)
TPA3118D2 TPA3110D2 TPA3116D2 TPA3130D2 TPA3131D2 TPA3132D2
30     15     50     15     7     25    
60     40     100     30        
4     4     3     6     2     2    
3     4     2     3        
Closed     Closed     Closed     Closed     Closed     Closed    
2     2     2     2     2     2    
Analog     Analog     Analog     Analog     Analog     Analog    
Hardware     Hardware     Hardware     Hardware     Hardware     Hardware    
4.5     8     4.5     4.5     4.5     4.5    
26     26     26     26     26     26    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
1.65 | 1ku     0.85 | 1ku     1.80 | 1ku     1.30 | 1ku     1.10 | 1ku     1.20 | 1ku    
Class D     Class D     Class D     Class D     Class D     Class D    

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