Description
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.

Features
• 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
   – Device HBM ESD Classification Level H2
   – Device CDM ESD Classification Level C4B

Applications
• Automotive Audio
• Emergency Call
• Driver Notifications