Product details

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) 4 Output power (W) 50 SNR (dB) 102 THD + N @ 1 kHz (%) 0.02 Iq (Typ) (mA) 23 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 4.5 Analog supply (Max) (V) 26 PSRR (dB) 70 Operating temperature range (C) -40 to 85
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) 4 Output power (W) 50 SNR (dB) 102 THD + N @ 1 kHz (%) 0.02 Iq (Typ) (mA) 23 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 4.5 Analog supply (Max) (V) 26 PSRR (dB) 70 Operating temperature range (C) -40 to 85
HTSSOP (DAD) 32 89 mm² 11 x 8.1
  • Longer Battery-Operating Time:
    • Ultra-Low Idle Current: 15 mA at 12 V
  • 2 × 50 W Into a 4-Ω Load at 21 V, 10% THD+N
  • Wide Voltage Range: 4.5 V to 26 V
  • Highly Efficient Class-D Operation
    • Hybrid Modulation Scheme Dynamically Reduces Power Loss
    • Low Rds(on) of 90-mΩ Enables > 90% Efficiency
  • Pop-and-Click Noise Suppression
  • Supports Stereo, Mono BTL and Mono PBTL
  • Multiple Switching Frequencies:
    • AM Avoidance
    • Master and Slave Synchronization
    • 300-KHz to 1.2-MHz Switching Frequencies
  • Selectable Gains: 20 dB, 26 dB, 32 dB, 36 dB
  • Programmable Power Limit
  • Supports Both Single and Dual Power Supply
  • Integrated Protections with Error Report:
    • Overvoltage, Undervoltage, Overtemperature, DC-Detect, and Short Circuit
  • Thermally Enhanced Package
    • DAD (32-Pin HTSSOP PowerPAD™ Up)
  • Performance Upgrade of the TPA3116D2
    • 70% Less Idle Current; Pin-to-Pin Compatible
  • Longer Battery-Operating Time:
    • Ultra-Low Idle Current: 15 mA at 12 V
  • 2 × 50 W Into a 4-Ω Load at 21 V, 10% THD+N
  • Wide Voltage Range: 4.5 V to 26 V
  • Highly Efficient Class-D Operation
    • Hybrid Modulation Scheme Dynamically Reduces Power Loss
    • Low Rds(on) of 90-mΩ Enables > 90% Efficiency
  • Pop-and-Click Noise Suppression
  • Supports Stereo, Mono BTL and Mono PBTL
  • Multiple Switching Frequencies:
    • AM Avoidance
    • Master and Slave Synchronization
    • 300-KHz to 1.2-MHz Switching Frequencies
  • Selectable Gains: 20 dB, 26 dB, 32 dB, 36 dB
  • Programmable Power Limit
  • Supports Both Single and Dual Power Supply
  • Integrated Protections with Error Report:
    • Overvoltage, Undervoltage, Overtemperature, DC-Detect, and Short Circuit
  • Thermally Enhanced Package
    • DAD (32-Pin HTSSOP PowerPAD™ Up)
  • Performance Upgrade of the TPA3116D2
    • 70% Less Idle Current; Pin-to-Pin Compatible

The TPA3126D2 is a 50-W, stereo, low-idle-current Class-D amplifier in a thermally enhanced package. The TPA3126D2 includes TI’s proprietary hybrid modulation scheme, which dynamically reduces idle current at low power levels to extend the battery life of portable audio systems, like bluetooth speakers.

To further simply the design, the Class-D amplifier integrates full protection features including short circuit, thermal shutdown, overvoltage, undervoltage, and DC speaker protection. Faults are reported back to the processor to prevent devices from being damaged during overload conditions.

The TPA3126D2 is a 50-W, stereo, low-idle-current Class-D amplifier in a thermally enhanced package. The TPA3126D2 includes TI’s proprietary hybrid modulation scheme, which dynamically reduces idle current at low power levels to extend the battery life of portable audio systems, like bluetooth speakers.

To further simply the design, the Class-D amplifier integrates full protection features including short circuit, thermal shutdown, overvoltage, undervoltage, and DC speaker protection. Faults are reported back to the processor to prevent devices from being damaged during overload conditions.

Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Data sheet TPA3126D2 50-W Stereo, Analog-Input, Class-D Audio Amplifier with Low, 15-mA Idle Current and AM Avoidance datasheet 03 Apr 2018

Design & development

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

Evaluation board

TPA3126D2EVM — TPA3126D2 Inductor Free 50W Stereo (BTL) Class-D Audio Amplifier Evaluation Module

The TPA3126D2EVM allows for the evaluation of the TPA3126D2. This is an efficient class D audio power amplifier for driving 2 bridged-tied stereo speakers at 50W per channel.
In stock
Limit: 1
Simulation model

TPA3126D2 TINA-TI Transient Spice Model

SLOM446.ZIP (42 KB) - TINA-TI Spice Model
Simulation model

TPA3126D2 TINA-TI Reference Design (Rev. A)

SLOM447A.TSC (96 KB) - TINA-TI Reference Design
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Reference designs

TIDA-050024 — Envelope-tracking power supply reference design for mid-power audio power amplifier application

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 (...)
Package Pins Download
HTSSOP (DAD) 32 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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