XL4016 300W DC-DC Buck Converter Module – 9A Adjustable Power Supply | Step Down Regulator

�� Overview: The XL4016 300W DC-DC Step-Down Buck Converter Module is a high-performance power supply board designed for demanding applications such as LED driving, battery charging, and DIY electronics. It supports adjustable voltage (1.2V to 35V) and current (0.2A to 8A), offering precise control through dual potentiometers. With support for Constant Voltage (CV) and Constant Current (CC) modes, it is ideal for safely powering sensitive devices and managing charging cycles for lithium or lead-acid batteries. ⚙️ Technical Highlights: �� Turn Lamp Current: Automatically turns the LED green when current drops to 10% of the set value — ideal for battery charge status indication. �� Thermal Management: Add a fan if temperature exceeds 65°C. Dual heatsinks prevent thermal crossover. �� High Accuracy: Uses benchmark IC and precision current-sensing resistor. Less than 1% drift from 20°C to 100°C. �� Durable Build: Features large Sendust core inductor, double copper wiring, and four high-frequency capacitors for ultra-low ripple and stable operation. ✅ Applications: High Power LED Driver (e.g. 10W, 20W, 50W COB LEDs) Lithium-ion / Lead-acid Battery Charging Arduino / Raspberry Pi / Microcontroller Power DIY Lab Bench Power Supply 12V/24V Automotive Electronics On-Board Laptop or Router Power Source DC Fan or Motor Control Solar System Charging / Regulation �� How to Use for Battery Charging: Set your desired charging voltage using the voltage potentiometer. Set the current limit using the current potentiometer (with output shorted and multimeter in series). After settings, connect the battery and start charging. LED will turn green when the battery is full (current drops to 10% of preset). �� Using for LED Driver: Know the LED’s max voltage and safe current. Set output voltage slightly higher than LED voltage. Adjust current limit safely to LED’s rated current. Connect LED — module will maintain current and automatically regulate voltage. ⚠️ Important Notes: ❌ No Input Reverse Polarity Protection – use a diode externally if needed. ❌ No Output Anti-Backflow Protection – required if connecting to inductive or battery-based loads. �� Cooling Is Critical for high power use — always install a fan or heatsink beyond 3A continuous use. �� What’s in the Box: 1 x XL4016 DC-DC Buck Converter Module (300W, 9A, Adjustable)