10-W stereo, 20-W mono, 4.5- to 14.4-V, analog in Class-D audio amplifier w/ inductor free & low EMI


Product details


Audio input type Analog Input Architecture Class-D Speaker channels (Max) Stereo Power stage supply (Max) (V) 14.4 Power stage supply (Min) (V) 4.5 Load (Min) (ohms) 4 Output power (W) 10 SNR (dB) 102 THD + N @ 1 kHz (%) 0.04 Iq (Typ) (mA) 35 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 4.5 Analog supply (Max) (V) 14.4 PSRR (dB) 80 Operating temperature range (C) -40 to 85 open-in-new Find other Speaker amps

Package | Pins | Size

HTSSOP (PWP) 28 43 mm² 9.7 x 4.4 open-in-new Find other Speaker amps


  • 2 × 10 W/ch into 6-Ω loads at 10% THD+N from a 12-V supply
  • 2 × 10 W/ch into 8-Ω loads at 10% THD+N from a 13-V supply
  • Up to 90% Efficient class-D operation (8 Ω) eliminates need for heat sinks
  • <0.05% THD+N at 1 W/4 Ω/1 kHz
  • Wide supply voltage range allows operation from 4.5 V (8 V for TPA3136AD2) to 14.4 V
  • Inductor-free operation
  • Enhanced EMI performance with spread spectrum
  • SpeakerGuard™ speaker protection includes power limiter and DC protection
  • Robust pin-to-pin, pin-to-ground, and pin-to-power short circuit protection and thermal protection
  • 26-dB Fixed gain
  • Single-ended or differential analog inputs
  • Click and pop free startup

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The TPA3136D2, TPA3136AD2 device an efficient, Class-D audio power amplifier for driving bridged-tied stereo speakers at up to 10 W, 6 Ω, or 8 Ω (per channel).

Advanced EMI Suppression Technology with Spread Spectrum Control scheme enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements for system cost reduction. The TPA3136D2, TPA3136AD2 device is not only fully protected against shorts and overload, the SpeakerGuard™ speaker protection circuitry includes a power limiter and a DC detection circuit for protection of the connected speakers. The DC detect and Pin-to-Pin, Pin-to-Ground, and Pin-to-Power Short Circuit protection circuit protect the speakers from output DC and pin shorts caused in production. The outputs are also fully protected against shorts to GND, PVCC, and output-to-output. The short-circuit protection and thermal protection includes an auto recovery feature.

The TPA3136D2, TPA3136AD2 device can drive stereo speakers with as low as 4-Ω impedance. The high efficiency of the TPA3136D2, TPA3136AD2, 90% with an 8-Ω load, eliminates the need for an external heat sink, and TPA3136D2, TPA3136AD2 will be able to output full power on a 2-layer PCB.

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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

Technical documentation

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Type Title Date
* Data sheet TPA3136D2, TPA3136AD2 10-W Inductor Free Stereo (BTL) Class-D Audio Amplifier with Ultra Low EMI datasheet (Rev. F) Jan. 17, 2020
Application note TPA3136D2 Design Considerations for EMC (Rev. A) Jul. 27, 2018
Application note TPA3138 Transition Guide – from TPA3110, TPA3113 Jul. 06, 2018
Technical article Inductor-free innovation: low EMI Class-D audio Aug. 29, 2017
User guide TPA3136D2EVM User's Guide (Rev. A) May 26, 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The TPA3110D2 evaluation module consists of a single 15-W, Class-D, stereo audio power amplifier complete with a small number of external components mounted on a circuit board that can be used to directly drive a speaker with an external analog audio source as the input. The EVM’s default (...)

  • Efficient Class-D Operation
  • Support for Filter-Free Operation
  • SpeakerGuardTM Speaker Protection circuitry
  • Four Selectable, Fixed Gain Settings
  • Wide Operating Voltage: 8 V - 26 V
  • Thermal and Short Circuit Protection with Auto Recovery Feature
document-generic User guide
The TPA3136D2EVM allows for the evaluation of the TPA3136D2. This is an efficient class D audio power amplifier for driving 2 bridged-tied stereo speakers at 10W per channel.   The evaluation module is populated with only 1 TPA3136D2 device. It operates from a single power supply from 4.5V to 14.4V.

  • Supports Multiple Output Configurations
    • 2 × 10 W Into a 6-O BTL Load at 12 V
    • - 2 × 10 W Into a 8-O BTL Load at 13 V
  • Wide voltage Range: 4.5 V to 14.4 V
  • Efficient Class-D Operation
    • Up to 90% power efficiency combined with low idle loss
    • Advanced Modulation Schemes
  • Programmable power limit
  • 26-dB fixed gain

Design tools & simulation

SLOM413.TSC (37 KB) - TINA-TI Reference Design
SLOM414.ZIP (24 KB) - TINA-TI Spice Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

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HTSSOP (PWP) 28 View options

Ordering & quality

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