TPA3118D2-Q1 - 2-Ch, 30-W Analog Input Class-D Audio Amplifier

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