12A 100W DC to DC Step-Down Buck Adjustable Constant Voltage Power Supply Module
Price in Sri Lanka

This compact buck converter efficiently steps down DC voltage from 5–40 V to a stable, adjustable output between 1.2 V and 36 V. With a maximum output current of 12 A and peak power of 100 W, it’s ideal for powering microcontrollers, LED strips, motors, and lab setups.

Specifications

• Topology: Non-isolated synchronous buck (step-down)
• Input Voltage: 5 V – 40 V DC
• Output Voltage: 1.2 V – 36 V DC (continuously adjustable via multi-turn potentiometer)
• Output Current:
  - Max: 12 A (with adequate cooling)
  - Rated: 8 A continuous
• Output Power: Up to 100 W
• Conversion Efficiency: Up to 95% (typical)
• Switching Frequency: 180 kHz
• Operating Temperature: –40 °C to +85 °C
• Overtemperature Protection: Yes (auto shutdown on thermal overload)
• Input Reverse Polarity Protection: No (external diode recommended)
• Cooling: Large heatsink included; active airflow recommended for >8 A

Features

• Wide input/output range for flexible power regulation
• High current output suitable for motors, LED drivers, and battery charging
• Multi-turn potentiometer for precise voltage adjustment
• Thermal shutdown protection for safe operation
• Ideal for lab power supplies, DIY electronics, and embedded systems
• Common use cases:
  - Powering Arduino, ESP32, Raspberry Pi (via regulated 5 V)
  - LED strip dimming and regulation
  - Battery charging (with external current limiting)
  - Bench-top adjustable power supply

Demo Video: Youtube