1 Features
1• Supports Multiple Output Configurations
– 2 × 4 W into a 8-Ω BTL Load at 7.4 V
(TPA3131D2)
– 2 × 25 W into a 8-Ω BTL Load at 19 V
(TPA3132D2)
• Wide Voltage Range: 4.5 V to 26 V
• Automotive Load-Dump Compliant
• Efficient Class-D Operation
– >90% Power Efficiency Combined With Low
Idle Loss for Heat Sink free Operation
– Advanced Modulation Schemes
• Multiple Switching Frequencies
– AM Avoidance
– Master and Slave Synchronization
– Up to 1.2-MHz Switching Frequency
• 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, DCDetect,
and Short Circuit With Error Reporting
• Thermally Enhanced Package
– 32-Pin VQFN Pad-Down
• –40°C to 85°C Ambient Temperature Range

2 Applications
• Laptop Computers and Ultrabooks
• Flatpanel TV
• Consumer Audio Applications

3 Description
The TPA313xD2 are efficient, stereo digital amplifier
power stages for driving speakers with up to 2x42W/4Ω peak power. TPA3131/32D2 operates
heatsink-free with cooling to PCB through the bottom
side PowerPAD™ with sustained output power from 2
× 4 W / 8 Ω (TPA3131D2) to 2 × 25 W / 8 Ω
(TPA3132D2).
The TPA313xD2 advanced oscillator/PLL circuit
employs a multiple switching frequency option to avoid AM interferences; this is achieved together with
an option of Master and Slave synchronization,
making it possible to synchronize multiple devices.
The TPA313xD2 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.
For feature compatible devices see: PowerPAD up
device 2 × 50-W TPA3116D2, PowerPAD down 2 ×
15-W TPA3130D2 and 2 × 30-W TPA3118D2.