TPA3118D2QDAPRQ1

1 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, DCDetect, 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

2 Applications

• Automotive Audio

• Emergency Call

• Driver Notifications

3 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.

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