TPA3118 60W Mono / 30W Stereo Class D Digital Audio Power Amplifier Module

Overview

The TPA3118 Digital Audio Amplifier Module is a high-efficiency Class D power amplifier that delivers massive sound from an incredibly small footprint. Designed for high-fidelity audio applications, this module operates with over 90% power efficiency, meaning it generates very little heat even when pushed to high volumes.

Whether you are building a custom Bluetooth speaker, upgrading your car’s audio system, or creating a portable “Boombox,” the TPA3118 provides crystal-clear sound across a wide voltage range of 4.5V to 24V. It is the perfect bridge between low-power hobbyist boards and expensive professional audio equipment.

Key Features & Benefits

• Ultra-High Efficiency: The Class D architecture ensures that more than 90% of the power goes to the speakers, minimizing the need for bulky heat sinks.

• Flexible Output: Easily configured for 60W Mono (PBTL mode) for subwoofers or 30W + 30W Stereo for standard left/right speaker setups.

• AM Interference Avoidance: Features advanced oscillator and PLL circuitry to prevent electromagnetic interference (EMI), making it safe to use alongside WiFi and Bluetooth modules.

• Comprehensive Protection: Built-in safeguards against over-voltage, under-voltage, thermal runaway, and short-circuits to protect both the chip and your speakers.

• Compact & Versatile: The slim PCB design allows for easy integration into tight DIY enclosures or existing audio consoles.

Applications

• DIY Bluetooth Speakers: Combine with a 12V or 24V battery pack for a high-end portable sound system.

• Home Theater Upgrades: Power bookshelf speakers or small center-channel speakers with ease.

• Automotive Audio: A popular choice for adding extra channels or powering tweeters in vehicle sound systems.

• Desktop Audio: Create a high-quality PC sound setup that takes up minimal desk space.

Technical Specifications