Description
●The TPA3111D1-Q1 device is a 10-W efficient, Class-D audio power amplifier for driving a bridge tied speaker. Advanced EMI suppression technology enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements. SpeakerGuard™ protection circuitry includes an adjustable power limiter and a DC detection circuit. The adjustable power limiter allows the user to set a virtual voltage rail lower than the chip supply to limit the amount of current through the speaker. The DC-detect circuit measures the frequency and amplitude of the PWM signal and shuts off the output stage if the input capacitors are damaged or shorts exist on the inputs.
●Features
●• 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 C2
●• 10-W into an 8-Ω Load at 10% THD+N from a 12-V Supply
●• 7-W into a 4-Ω Load at 10% THD+N from an 8-V Supply
●• 94% Efficient Class-D Operation into 8-Ω Load Eliminates Need for Heat Sinks
●• Wide Supply Voltage Range Allows Operation from 8 to 26 V
●• Filter-Free Operation
●• SpeakerGuard™ Speaker Protection Includes Adjustable Power Limiter Plus DC Protection
●• Flow Through Pin Out Facilitates Easy Board Layout
●• Robust Pin-to-Pin Short-Circuit Protection and Thermal Protection with Auto-Recovery Option
●• Excellent THD+N and Pop Free Performance
●• Four Selectable Fixed Gain Settings
●• Differential Inputs
●Applications
●• Automotive Noise Generation for HEV/EV
●• Automotive Emergency Call (eCall) Systems
●• Automotive Infotainment Systems (Head Unit, Cluster, Telematics, Navigation)
●• Automotive Connectivity Gateway
●• Professional Audio Equipment (PA Speakers, Studio Headphones, Performance Amplifiers, Premium Microphones)
●• Aerospace and Aviation Audio Systems
