TPA3110D2 15-W Filter-Free Stereo Class-D Audio Power Amplifier With Speakerguard™

Introduction
The TPA3110D2 is a 15-W (per channel) efficient, Class-D audio power amplifier for driving bridged-tied stereo speakers. Advanced EMI Suppression Technology enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements. SpeakerGuard™ speaker 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.

Specification
• 15-W/ch into an 8-Ω Loads at 10% THD+N From a 16-V Supply
• 10-W/ch into 8-Ω Loads at 10% THD+N From a 13-V Supply
• 30-W into a 4-Ω Mono Load at 10% THD+N From a 16-V Supply
• 90% Efficient Class-D Operation Eliminates Need for Heat Sinks
• Wide Supply Voltage Range Allows Operation From 8 V 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 / Pop-Free Performance
• Four Selectable, Fixed Gain Settings
• Differential Inputs