TPA3116D2 Stereo Amplifier Board – 2×50W Dual Channel Class D Audio Amplifier

TPA3116D2 Stereo Amplifier Board – Dual Channel Class D Audio Amplifier

The TPA3116D2 Stereo Amplifier Board is a compact and efficient audio amplification module designed for DIY audio systems, custom speaker projects, electronics development, and stereo sound applications. Based on the TPA3116D2 Class D amplifier IC, this board provides dual-channel stereo audio amplification with a stated output of 2×50W. It is suitable for users who want to build or upgrade an audio system using an external DC power supply and compatible speakers.

With a working voltage range of 12V to 28V DC, the TPA3116D2 Amplifier Module can be integrated into different low-voltage audio projects. Its Class D amplification design offers efficient operation and helps reduce power losses compared with many conventional amplifier designs. Actual output power depends on the supply voltage, speaker impedance, cooling, audio signal, and operating conditions.

2×50W Dual Channel Stereo Output

This amplifier board is designed for two-channel stereo sound reproduction. It provides separate left and right speaker output connections, allowing users to connect compatible speakers for a stereo audio setup. The advertised output rating is 2×50W, with one channel for the left speaker and the other for the right speaker.

The dual-channel configuration makes this module useful for DIY stereo speakers, desktop audio systems, custom sound boxes, and other audio electronics projects. For reliable operation, use a suitable DC power supply and speakers compatible with the amplifier’s electrical requirements.

TPA3116D2 Class D Amplifier Technology

At the heart of the TPA3116D2 Stereo Amplifier Board is the TPA3116D2 power amplifier IC. This Class D amplifier design is intended for efficient audio amplification in compact electronic equipment. The board includes a large heatsink mounted over the amplifier section to assist with heat dissipation during operation.

The heatsink helps manage operating temperature, but adequate ventilation is still important. Avoid enclosing the board in a space where heat cannot escape, especially during extended use or higher-power operation.

TL074C Preamplifier Section

The board also features a TL074C operational amplifier IC in its preamplifier section. This stage is used for audio signal processing before the signal reaches the power amplification stage. The combination of the preamplifier section and TPA3116D2 power amplifier makes the board suitable for custom stereo audio system development.

The board’s design provides dedicated audio input connections and adjustment controls for the left and right channels. Check the board’s printed terminal labels before making connections.

Independent Left and Right Volume Adjustment

The module includes separate left-channel and right-channel volume adjustment controls. These controls allow users to adjust the relative volume of each stereo channel according to their speaker arrangement and listening requirements.

This feature is useful when building custom stereo speaker systems where individual channel adjustment is required. Make adjustments gradually and avoid applying excessive input signals that may cause distortion.

12V–28V DC Operating Voltage

The TPA3116D2 Amplifier Module operates from a DC supply within the stated range of 12V to 28V. Select a regulated power supply that is appropriate for the intended speaker load and operating conditions. Confirm the positive and negative power input terminals before connecting the supply.

Incorrect polarity, an unsuitable supply voltage, or poor wiring can damage the amplifier board. Always disconnect the power supply before changing speaker or input connections.

Compact Design for DIY Audio Projects

The board has an approximate physical size of 92mm × 68mm, as indicated in the product image. Its compact PCB layout makes it convenient for installation in custom speaker enclosures, audio equipment housings, and electronics development projects.

The board includes screw-terminal connections for power and speaker wiring, along with audio input connections and adjustment controls. Its heatsink and onboard components are arranged to provide a practical amplifier module for custom audio applications.

Applications

The TPA3116D2 Stereo Amplifier Board can be used in:

• DIY stereo speaker systems
• Desktop and home audio projects
• Custom speaker enclosures
• Portable audio system development
• Electronics prototyping and experimentation
• Educational audio electronics projects
• Custom low-voltage sound amplification systems

Installation and Usage Notes

Before powering the board, verify the DC supply polarity and voltage. Connect the left and right speakers to their respective output terminals and connect the audio source to the input terminals according to the PCB labels. Use speakers with a suitable impedance and power rating for the amplifier.

Do not short the speaker outputs together or connect them to ground unless the manufacturer’s circuit documentation specifically permits it. Provide sufficient ventilation around the heatsink and avoid touching the board while powered. Disconnect the supply before making wiring changes.

Why Choose Electrica?

Electrica provides electronic components, amplifier modules, development boards, tools, and accessories for electronics enthusiasts, technicians, students, and professional users. We aim to make practical electronic solutions accessible for repair work, prototyping, educational projects, and custom development.

Visit https://www.electrica.com.pk to explore more electronic components and modules.

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