The TPA311xD2-Q1 devices are automotive stereo, efficient, digital-amplifier power stages for driving speakers up to 100 W into 2 Ω in mono. The TPA3118D2-Q1 can even drive 2 × 30 W into 8 Ω without a heat sink on a dual-layer PCB. If even higher power is needed, the TPA3116D2-Q1 drives 2 × 50 W into 4 Ω with a small heat sink attached to its top-side thermal pad.
The TPA311xD2-Q1 advanced oscillator and PLL circuit employ a multiple-switching-frequency option to avoid AM interference; this is achieved together with an option of either master or slave selection, making it possible to synchronize multiple devices.
The TPA311xD2-Q1 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.
Supports Multiple Output Configurations
2 × 50 W Into a 4-Ω BTL Load at 21 V (TPA3116D2-Q1)
2 × 30 W Into an 8-Ω BTL Load at 24 V (TPA3118D2-Q1)
Wide Voltage Range: 4.5 V to 26 V
Efficient Class-D Operation
>90% Power Efficiency Combined With Low Idle Loss Greatly Reduces Heat Sink Size
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 BTL and Mono PBTL Modes
Single Power Supply Reduces Component Count
Integrated Self-Protection Circuits Including Overvoltage, Undervoltage, Overtemperature, DC-Detect, and Short Circuit With Error Reporting
Designed for Automotive EMC Requirements
Thermally Enhanced Packages
DAD (32-pin HTSSOP Pad Up)
DAP (32-pin HTSSOP Pad Down)
–40°C to 125°C Ambient Temperature Range
Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range