The 200 W 20 A DC-DC Buck Converter Step-Down Module is a high-power voltage regulator designed to efficiently reduce a higher DC input voltage to a lower, stable DC output. Built for high current applications, it features large heatsinks, a high-current inductor, and adjustable voltage control, making it suitable for power-hungry electronics, battery charging systems, motor drivers, and embedded power supplies.
Core Module Specifications
• Module Type: DC-DC step-down (buck) converter
• Max Output Power: Up to 200 W
• Max Output Current: Up to 20 A
• Regulation Type: Switching regulator
Electrical & Interface
• Input Voltage Range: Typically 8 V – 40 V DC (module dependent)
• Output Voltage Range: Adjustable (lower than input)
• Output Current: Up to 20 A (with adequate cooling)
• Adjustment Method: Onboard multi-turn potentiometer
• Terminals: Screw terminals for VIN+/VIN− and VOUT+/VOUT−
• Efficiency: High efficiency under proper load conditions
Performance Characteristics
• Stable output voltage at high current
• Low heat generation compared to linear regulators
• Suitable for continuous high-power operation with cooling
• Output stability depends on input quality and load
Physical Characteristics
• Module Type: High-power PCB-mounted converter
• Cooling: Dual aluminum heatsinks
• Inductor: High-current toroidal inductor
• Robust and industrial-grade construction
Compatibility
• Battery packs and DC power supplies
• Arduino, ESP32, Raspberry Pi power systems
• Motor drivers and CNC controllers
• LED power systems
• DIY and industrial electronics projects
Key Advantages
• Handles very high current loads
• Wide input voltage range
• Adjustable output for flexible use
• High efficiency and reliable design
Technical Insights
• Output voltage must be set before connecting sensitive loads
• Requires airflow or additional cooling near max load
• Higher current operation needs thick input/output wires
• Not isolated (input and output share common ground)
Applications
• High-current DC power supplies
• Battery charging and management systems
• CNC and motor driver power regulation
• LED lighting systems
• Robotics and automation power modules
Pro Tip
• Always adjust output voltage using a multimeter first
• Use proper gauge wires for 20 A operation
• Add a cooling fan for continuous high-load use
• Do not exceed rated input or output limits
Package Includes
• 1 × 200 W 20 A DC-DC Buck Converter Step-Down Module