TPA3113D2 6-W Stereo Class-D Audio Power Amplifier with SpeakerGuard™ (TPA3113) |

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6-W Stereo Class-D Audio Power Amplifier with SpeakerGuard™ (TPA3113)


For a smaller, 10-W speaker amplifier that also provides lower bill of materials costs, see the TPA3138D2

For a 15-W speaker amplifier with low-idle power dissipation to extend battery life, see the TPA3129D2


The TPA3113D2 is a 6-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 TPA3113D2 can drive stereo speakers as low as 4 Ω. The high efficiency of the TPA3113D2, 87%, 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.


  • 6-W/ch into an 8-Ω Loads at 10% THD+N From a
    10-V Supply
  • 12-W into a 4-Ω Mono Load at 10% THD+N From
    a 10-V Supply
  • 87% 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 Pinout Facilitates Easy Board
  • 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
    • Televisions
    • Consumer Audio Equipment
    • Monitors

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Part number Order Audio input type Architecture 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 (Min) (V) Analog supply (Max) (V) Power to parallel bridge tied load (Max) (W) PSRR (dB) Operating temperature range (C) Rating
TPA3113D2 Order now Analog Input     Class-D     Stereo     8     26     6     4     102     0.05     10     Hardware     Closed     8     26     12     70     -40 to 85     Catalog    
TPA1517 Order now Analog Input     Class-D     Stereo     9.5     18     6     4       0.1     0.007     Hardware     Open     9.5     18       65     -40 to 85     Catalog    
TPA3005D2 Order now Analog Input     Class-D     Stereo     8.5     18     6     8       0.1     11     Hardware     Open     8.5     18       80     -40 to 85     Catalog    
TPA3137D2 Order now Analog Input     Class-D     Stereo     4.5     14.4     6     2     102     0.04     35     Hardware     Closed     4.5     14.4     12     80     -40 to 85     Catalog