15W Filter-Free Class D Stereo Amplifier with SpeakerGuard™ (TPA3110)

15W Filter-Free Class D Stereo Amplifier with SpeakerGuard™ (TPA3110) - TPA3110D2

Next Generation Low-EMI 10-W, Stereo, Analog Input Class-D Audio Amplifier:  TPA3136D2


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.


  • 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

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Parametrics Compare all products in Speaker Amps

Audio Input Type
Speaker Channels (Max)
Power Stage Supply (Min) (V)
Power Stage Supply (Max) (V)
Output Power (W)
Load (Min) (ohms)
SNR (dB)
THD + N @ 1 kHz (%)
Iq (Typ) (mA)
Control Interface
Closed/Open Loop
Analog Supply (V) (Min)
Analog Supply (V) (Max)
Power to Parallel Bridge Tied Load (Max) (W)
Operating Temperature Range (C)
TPA3110D2 TPA3136D2 TPA3138D2
Analog Input    Analog Input     
Class-D    Class-D     
Stereo    Stereo    Stereo   
8    4.5     
26    14.4     
10    10     
4    2     
0.1    0.04     
10    35     
Hardware    Hardware    Hardware   
Closed    Closed    Closed   
8    4.5    4.5   
26    14.4    14.4   
30    20     
70    80     
-40 to 85    -40 to 85    -40 to 85   
Catalog    Catalog    Catalog   

Other qualified versions of TPA3110D2

Version Part Number Definition
Automotive TPA3110D2-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects