TPA3128D2

ACTIVE

30-W stereo, 60-W mono, 4.5- to 26-V, analog input Class-D audio amplifier w/ low idle current

Top

Product details

Parameters

Audio input type Analog Input Architecture Class-D Speaker channels (Max) Stereo Power stage supply (Max) (V) 26 Power stage supply (Min) (V) 4.5 Load (Min) (ohms) 2 Output power (W) 30 SNR (dB) 102 THD + N @ 1 kHz (%) 0.1 Iq (Typ) (mA) 17 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 4.5 Analog supply (Max) (V) 26 Power to parallel bridge tied load (Max) (W) 60 PSRR (dB) 70 Operating temperature range (C) -40 to 85 open-in-new Find other Speaker amps

Package | Pins | Size

HTSSOP (DAP) 32 68 mm² 11 x 6.1 open-in-new Find other Speaker amps

Features

  • Supports Multiple Output Configurations
    • 2 × 30 W Into a 8-Ω BTL Load at 24 V (TPA3128D2)
    • 2 × 15 W Into a 8-Ω BTL Load at 15 V (TPA3129D2)
  • Wide Voltage Range: 4.5 V to 26 V
  • Efficient Class-D Operation
    • Very Low Idle Current: <23 mA for recommended LC filter configurations
    • Greater than 90% Power Efficiency Combined With Low Idle Loss Greatly Eliminates Need for Heat Sink
    • Adaptive Modulation Schemes based on Output Power
    • Smart Amplifier Drivers to Reduce the Requirement for RC Snubbers
  • Multiple Switching Frequencies
    • AM Avoidance
    • Master and Slave Synchronization
    • 300-KHz to 1.2-MHz Switching Frequency
  • Feedback Power-Stage Architecture With High PSRR Reduces PSU Requirements
  • Programmable Power Limit
  • Parallel BTL Mode and Mono-Channel Mode Support
  • Supports Both Single and Dual Power Supply Modes
  • Integrated Self-Protection Circuits Including Overvoltage, Undervoltage, Overtemperature, DC-Detect, and Short Circuit With Error Reporting
  • Thermally Enhanced Packages
    • DAP (32-Pin HTSSOP Pad Down for TPA3128D2 and TPA3129D2)

All trademarks are the property of their respective owners.

open-in-new Find other Speaker amps

Description

The TPA3128D2 and TPA3129D2 have low idle power loss and helps to extend the battery life of Bluetooth/Wireless speakers and other battery-powered audio systems. The high efficiency of the TPA3128D2 device allows it to do 2 × 30 W without external heat sink on a dual layer PCB. The high efficiency of the TPA3129D2 device allows it to do 2 × 15 W without external heat sink on a dual layer PCB. This device proposed an efficiency boost Mode, which can dynamically reduced the current ripple of the external LC filter and the idle current .

The TPA31xxD2 advanced oscillator/PLL circuit employs a multiple switching frequency option to avoid AM interferences, which is achieved together with an option of either master or 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 overvoltage, undervoltage, and DC protection. Faults are reported back to the processor to prevent devices from being damaged during overload conditions.

open-in-new Find other Speaker amps
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet TPA3128D2, TPA3129D2 2x30-W, 2x15-W Class-D Amplifier With Low Idle Power Dissipation datasheet (Rev. C) Jan. 22, 2018
Application notes Achieve Ultra-Low Idle Current With TPA3128D2 (Rev. A) May 01, 2018
White papers Overview of system-level protection in class-D audio amplifiers Dec. 06, 2017
Technical articles What are the building blocks of Bluetooth speakers? Feb. 21, 2017
More literature TPA3128D2EVM Quick Start Guide Jan. 30, 2017
User guides TPA3128D2 Evaluation Module Dec. 06, 2016

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
149
Description

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 (...)

Features
  • 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
EVALUATION BOARDS Download
document-generic User guide
99
Description
The TPA3128D2EVM allows for the evaluation of the TPA3128D2. This is an efficient class D audio power amplifier for driving 2 bridged-tied stereo speakers at 30W per channel.  The TPA3128D2 has low idle power loss and helps to extend the battery-life of Bluetooth/Wireless speaker and other (...)
Features
  • Supports Multiple Output Configurations
    • 2 × 30 W Into a 8Ω- BTL Load at 24 V
    • 65W Into a 2Ω- PBTL Load at 18 V
  • Wide voltage range:  4.5V to 26V
  • Efficient Class-D Operation
    • Up to 90% power efficiency combined with low idle loss
    • Adapative modulation schemes based on output power
  • Supported with user's guide and (...)

Design tools & simulation

SIMULATION TOOLS Download
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 (...)
Features
  • 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
  • (...)

Reference designs

REFERENCE DESIGNS Download
Envelope-tracking power supply reference design for mid-power audio power amplifier application
TIDA-050024 — This reference design delivers an envelope-tracking power supply circuit for mid-power audio power amplifier (PA) application with TPS43061 boost controller. By adding an audio envelope signal to the FB pin, the boost converter’s output voltage can change in accordance with the envelope of the (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Envelope-Tracking Power Supply Reference Design for Audio Power Amplifiers
PMP15036 — This envelope-tracking power reference design maintains helps extend battery life in a portable audio applications, such as Bluetooth® or Wi-Fi speakers. The low-power step-down converter in the design features envelope-tracking capability to an audio power amplifier, maintaining high efficiency (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
HTSSOP (DAP) 32 View options

Ordering & quality

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos

Related videos