• Supports Multiple Output Configurations
– 2 × 4 W into a 8-Ω BTL Load at 7.4 V
– 2 × 25 W into a 8-Ω BTL Load at 19 V
• 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
• 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
• Laptop Computers and Ultrabooks
• Flatpanel TV
• Consumer Audio Applications
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.
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