DC-DC Buck Converter 300W 20A Adjustable Step-Down Power Supply Module with Heatsink

DC-DC Buck Converter 300W 20A — Adjustable Step-Down Power Supply Module

This high-power DC-DC step-down (buck) converter module delivers up to 300W and 20A of continuous output current with excellent efficiency. Featuring a large aluminum heatsink, toroidal inductor, and high-capacity electrolytic capacitors, it is built for demanding applications where stable, adjustable voltage is critical. Whether you're powering motors, LED arrays, battery chargers, or lab benches — this module handles it all with ease.

Key Features

• 300W maximum output power
• 20A continuous output current
• Wide input voltage range: 5V – 40V DC
• Adjustable output voltage: 1.2V – 35V DC (via onboard potentiometer)
• High conversion efficiency: up to 95%
• Large aluminum heatsink for passive thermal management
• Toroidal core inductor for low EMI and high efficiency
• High-capacity electrolytic capacitors for stable output
• Screw terminal blocks for secure wire connections
• Short-circuit and overcurrent protection
• Mounting holes for easy panel or chassis installation

Specifications

• Input Voltage: 5V – 40V DC
• Output Voltage: 1.2V – 35V DC (adjustable)
• Max Output Current: 20A
• Max Output Power: 300W
• Efficiency: Up to 95%
• Topology: Synchronous Buck (Step-Down)
• Inductor Type: Toroidal core
• Cooling: Aluminum heatsink (passive)
• Connection: Screw terminal blocks

Applications

• Variable bench power supply
• Solar panel voltage regulation
• Motor speed control and DC motor drives
• High-power LED driver
• Battery charging circuits
• Industrial automation and robotics
• Car audio and automotive power conversion