Overview
The TPA3156D2DADR is a highly efficient Class-D audio amplifier produced by Texas Instruments. This device is designed to provide low idle power dissipation, making it ideal for battery-powered audio systems such as Bluetooth and wireless speakers, soundbars, and home theaters. The TPA3156D2D2 operates within a wide voltage range of 4.5 V to 26 V and can deliver up to 2 x 70 W into a 4-Ω BTL load at 24 V. Its advanced features include adaptive modulation schemes, multiple switching frequencies, and integrated self-protection circuits, ensuring high efficiency and reliability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Power (BTL) | 2 x 70 W | At 24 V, 4-Ω load |
| Voltage Range | 4.5 V to 26 V | |
| Idle Current | < 23 mA | For recommended LC filter configurations |
| Power Efficiency | > 90% | |
| Switching Frequency | 300 kHz to 1.2 MHz | |
| Package Type | 32-Pin HTSSOP with PowerPAD | |
| Thermal Resistance (Junction-to-Ambient) | 1.2 °C/W | |
| Maximum Output Current | Up to 10 A |
Key Features
- Efficient Class-D Operation: Greater than 90% power efficiency and very low idle current.
- Adaptive Modulation Schemes: Based on output power to optimize efficiency.
- Multiple Switching Frequencies: 300 kHz to 1.2 MHz with AM avoidance.
- Master and Slave Synchronization: Using the SYNC pin to prevent audible beats noise.
- Programmable Power Limit: Limits output voltage to prevent overloading.
- Integrated Self-Protection Circuits: Overvoltage, undervoltage, overtemperature, DC-detect, and short-circuit protection with error reporting.
- Thermally Enhanced Package: 32-Pin HTSSOP with PowerPAD for improved thermal performance.
Applications
- Bluetooth and wireless speakers
- Soundbars
- Mini-micro component systems and docks
- Home theaters
Q & A
- What is the output power of the TPA3156D2DADR?
The TPA3156D2DADR can deliver up to 2 x 70 W into a 4-Ω BTL load at 24 V.
- What is the voltage range of the TPA3156D2DADR?
The device operates within a wide voltage range of 4.5 V to 26 V.
- How efficient is the TPA3156D2DADR?
The device has a power efficiency greater than 90%.
- What are the switching frequencies available for the TPA3156D2DADR?
The switching frequencies range from 300 kHz to 1.2 MHz.
- Does the TPA3156D2DADR support master and slave synchronization?
- What kind of protection circuits are integrated into the TPA3156D2DADR?
The device includes overvoltage, undervoltage, overtemperature, DC-detect, and short-circuit protection with error reporting.
- What is the package type of the TPA3156D2DADR?
The device is packaged in a 32-Pin HTSSOP with PowerPAD.
- What are the typical applications of the TPA3156D2DADR?
Typical applications include Bluetooth and wireless speakers, soundbars, mini-micro component systems, and home theaters.
- How does the TPA3156D2DADR manage idle current?
The device has an ultra-low idle loss mode, with an idle current of less than 23 mA for recommended LC filter configurations.
- Can the output power of the TPA3156D2DADR be limited?
