Buck/Boost Converter - 8-40V to 12V/3A

An industrial-grade DC buck-boost converter that accepts 8–40V input and delivers a regulated 12V output at up to 3A (36W). Ideal for battery-powered systems where input voltage varies — such as SLA or LiFePO4 batteries powering routers, Wi-Fi equipment, or other 12V loads — this module automatically steps voltage up or down to maintain a steady 12V output.

With 85% efficiency, generous heatsinking, and built-in protection, this is a reliable plug-and-play DC-DC solution for a wide range of power conditioning applications.

Key Features

• Buck-Boost Operation – Steps voltage up or down to deliver steady 12V output
• Wide Input Range – 8–40V DC input for flexible power sourcing
• 12V / 3A Output – Up to 36W regulated output
• 85% Efficiency – Minimises heat and power waste
• ±1% Output Accuracy – Tight voltage regulation
• Industrial Grade – Robust construction with heatsinking and protection
• Low Ripple – 100mV peak-to-peak output ripple

Ideal For

• Battery systems (SLA, LiFePO4) powering 12V equipment
• Routers, Wi-Fi access points, and networking gear on battery backup
• Solar and off-grid power systems
• Automotive and mobile electronics requiring regulated 12V

Specifications

• Input Voltage – 8–40V DC
• Input Current – 1–6.8A DC
• Output Voltage – 12V DC (±1%)
• Output Current – Up to 3A (36W)
• Quiescent Current – 25mA
• Efficiency – 85%
• Line Regulation – ±0.2%
• Output Ripple – 100mV peak-to-peak
• Switching Frequency – 160kHz

Package Contents

• 1× Buck/Boost Converter (WG8-40S1203)

Resources

• WG8-40S1203 Datasheet (PDF)