Overview
The TPA3131D2RHBR is a highly efficient Class-D audio amplifier from Texas Instruments (TI), designed to deliver premium sound quality for a range of consumer electronics. This advanced audio solution is ideal for applications requiring high-quality audio output with minimal power loss. The TPA3131D2 operates heatsink-free, with cooling to the PCB through the bottom side PowerPAD, and supports sustained output power from 2 × 4 W / 8 Ω to 2 × 25 W / 8 Ω for the TPA3132D2 variant.
The amplifier features advanced oscillator/PLL circuits with multiple switching frequency options to avoid AM interferences and supports Master and Slave synchronization, allowing multiple devices to be synchronized. It is fully protected against faults with short-circuit, thermal, overvoltage, undervoltage, and DC protection, with error reporting to prevent device damage during overload conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | VQFN-32 | |
| Pins | 32 | |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage Range | 4.5 to 26 | V |
| Output Power (TPA3131D2) | 2 × 4 W into 8-Ω BTL Load at 7.4 V | |
| Output Power (TPA3132D2) | 2 × 25 W into 8-Ω BTL Load at 19 V | |
| Power Efficiency | >90% | |
| Switching Frequency | Up to 1.2 MHz | |
| THD+N at 1 W/4 Ω/1 kHz | <0.05% | |
| SNR | 105 | dB |
| PSRR | 70 | dB |
Key Features
- Supports Multiple Output Configurations
- Wide Voltage Range: 4.5 V to 26 V
- Automotive Load-Dump Compliant
- Efficient Class-D Operation with >90% Power Efficiency and Low Idle Loss
- Advanced Modulation Schemes
- Multiple Switching Frequencies and AM Avoidance
- Master and Slave Synchronization
- Feedback Power Stage Architecture with High PSRR Reduces PSU Requirements
- Programmable Power Limit
- Differential and Single-Ended Inputs
- Stereo and Mono Mode with Single-Filter Mono Configuration
- Single Power Supply Reduces Component Count
- Integrated Self-Protection Circuits Including Overvoltage, Undervoltage, Overtemperature, DC-Detect, and Short Circuit with Error Reporting
- Thermally Enhanced Package with 32-Pin VQFN Pad-Down
Applications
The TPA3131D2RHBR is versatile and suitable for a multitude of audio applications, including:
- Home theaters
- Desktop audio systems
- Digital TV soundbars
- Consumer and professional audio products
Its high fidelity and efficient power usage make it an excellent choice for any application requiring high-quality audio output with minimal power loss.
Q & A
- What is the TPA3131D2RHBR?
The TPA3131D2RHBR is a highly efficient Class-D audio amplifier from Texas Instruments, designed for driving speakers with high-quality audio output.
- What is the operating temperature range of the TPA3131D2RHBR?
The operating temperature range is -40°C to 85°C.
- What is the supply voltage range for the TPA3131D2RHBR?
The supply voltage range is from 4.5 V to 26 V.
- What are the output power specifications for the TPA3131D2RHBR?
The TPA3131D2 can deliver 2 × 4 W into an 8-Ω BTL load at 7.4 V, while the TPA3132D2 can deliver 2 × 25 W into an 8-Ω BTL load at 19 V.
- Does the TPA3131D2RHBR require a heatsink?
No, it operates heatsink-free with cooling to the PCB through the bottom side PowerPAD.
- What protection features does the TPA3131D2RHBR have?
The amplifier includes overvoltage, undervoltage, overtemperature, DC-detect, and short-circuit protection with error reporting.
- Can the TPA3131D2RHBR be synchronized with other devices?
Yes, it supports Master and Slave synchronization, allowing multiple devices to be synchronized.
- What is the switching frequency range of the TPA3131D2RHBR?
The switching frequency can go up to 1.2 MHz.
- What is the THD+N at 1 W/4 Ω/1 kHz for the TPA3131D2RHBR?
The THD+N is less than 0.05% at 1 W/4 Ω/1 kHz.
- What are some common applications for the TPA3131D2RHBR?
Common applications include home theaters, desktop audio systems, digital TV soundbars, and other consumer and professional audio products.
- Is the TPA3131D2RHBR RoHS compliant?
Yes, the TPA3131D2RHBR is lead-free and RoHS compliant.
