TPA3113D2 Audio Amplifier: 2x6W Stereo Class D Module (12–26V) for Arduino

TPA3113D2 Two-Channel Audio Amplifier

A high-performance Class D audio amplifier module based on the TPA3113D2 chip. The device offers an output power of up to 2 x 6 W in a 2.0 stereo configuration. It delivers clear and dynamic sound with low distortion (THD+N 0.1%) when paired with 4–8 Ω speakers. The module was designed for home audio systems, portable speakers, and DIY projects requiring a reliable audio source.

Key Technical Features

• Output power: 2 x 6 W (8 Ω, THD 10%)
• Efficiency: approximately 90%
• Supply voltage: 12–26 V DC (recommended voltage: 24 V DC)
• Frequency response: 20 Hz – 20 kHz
• Speaker impedance: 4–8 Ω
• Audio input: line-level (INL/GND/INR) on a 3-pin connector—approx. 28 cm signal cable included
• Speaker outputs: screw terminal block for easy wire installation
• Protection: overvoltage, undervoltage, short-circuit, thermal, and DC component detection
• Dimensions: 92 x 68 x 17 mm

Example Applications

Thanks to its high efficiency and compact size, the module is versatile and can be used in many electronic devices and projects.

• Building high-performance, portable wireless speakers
• Design of home audio systems and zone audio systems
• Upgrading and repairing older audio and video equipment
• DIY projects in automation and embedded systems (for Arduino, Raspberry Pi, ESP32, and ESP8266)
• Installing sound systems in service locations

Benefits

The use of the TPA3113D2 integrated circuit ensures high energy efficiency while maintaining stable continuous-operation parameters.

• A wide supply voltage range allows for flexible selection of a power source depending on needs
• Two independent potentiometers allow for precise, separate volume control for the left and right channels
• The use of screw terminals eliminates the need for soldering wires, which speeds up and simplifies the connection process
• Built-in protection circuits safeguard the module against overload, short circuits, and overheating, enhancing operational reliability
• High Class D efficiency reduces heat generation and allows for a compact design