70-W stereo, 140-W mono, 4.5- to 26-V, analog input Class-D audio amplifier w/ low idle current
Product details
Parameters
Package | Pins | Size
Features
- 2 × 70 W Into a 4-Ω BTL Load at 24 V
- 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
- Adaptive Modulation Schemes based on Output Power
- 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
- DAD (32-Pin HTSSOP Pad Up)
- Pin to Pin Compatible with TPA3116D2 and TPA3126D2
Description
The TPA3156D2 has 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 TPA3156D2 device allows it to do 2 × 70 W with external heat sink on a dual layer PCB. This device integrates an efficiency boost mode, which dynamically reduces the current ripple of the external LC filter and the idle current .
The TPA3156D2 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 TPA3156D2 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.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | TPA3156D2 2 x 70-W, Analog Input, Stereo, Class-D Audio Amplifier With Low Idle Power Dissipation datasheet | Dec. 01, 2017 |
| Application note | Achieve Ultra-Low Idle Current With TPA3128D2 (Rev. A) | May 01, 2018 | |
| User guide | TPA3156D2 EVM User's Guide | Oct. 06, 2017 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The TPA3156D2EVM allows for the evaluation of the TPA3156D2. This is an efficient class D audio power amplifier for driving 2 bridged-tied stereo speakers at 70W per channel.
Features
- Supports Multiple Output Configurations
- 2 × 70 W Into a 4-O BTL Load at 24 V, with 10% THD
- Wide Voltage Range: 4.5 V to 26 V
- Efficient Class-D Operatio
- Up to 90% Power Efficiency
- Combined With Low Idle Loss Advanced Modulation Schemes
- Programmable Power Limit
Design tools & simulation
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
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| HTSSOP (DAD) | 32 | View options |
Ordering & quality
- 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
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