XL4015 5A DC-DC Adjustable Buck Converter – High-Power Lithium Battery Charger and Step-Down Power Supply Module with Constant Current (CC) and Constant Voltage (CV) Control

Product Description

Take control of high-current power requirements with the XL4015 5A DC-DC Adjustable Buck Module. This versatile module is more than just a step-down regulator; it is a full-featured Lithium-Ion Battery Charger and constant current LED driver. At Robogears, we recommend the XL4015 for applications that demand high power in a small form factor, such as powering high-brightness COB LEDs or charging multi-cell battery packs. The module features two independent potentiometers to control both Constant Voltage (CV) and Constant Current (CC). Whether you are building a laboratory bench power supply or an automated battery charging station at your Pimpri workshop, the XL4015 provides stable, high-efficiency power delivery up to 5A.

Detailed Key Features

• CC/CV Dual Control: Allows you to limit the maximum current output, which is essential for safely charging lithium batteries and preventing LED burnout.

• On-board Indicators: Features three LED indicators to show "Charging," "Full Charge," and "Constant Current" status at a glance.

• High-Power Throughput: Capable of delivering up to 5A of current, significantly higher than the standard LM2596 (3A) modules.

• Excellent Regulation: Low ripple and high stability across the wide 4V–38V input range.

• Built-in Protection: Features internal current limit and thermal shutdown functionality to protect both the module and your connected devices.

Prototyping & Engineering Tips (Robogears Exclusive)

• Battery Charging Setup: To use as a charger, first set the output voltage to your battery's "Full" level (e.g., 4.2V for 18650). Then, use a multimeter in "10A Current Mode" across the output and turn the CC potentiometer until you hit the desired charging rate (e.g., 1A).

• Heatsink is Mandatory: At our Pimpri facility, we always advise: if you plan to draw more than 3A or 50W continuously, the included heatsink must be attached using thermal tape or glue. For maximum lifespan, active fan cooling is recommended at 5A.

• Differential Voltage: Ensure the input voltage is at least 1.5V to 2V higher than the output voltage to maintain stable regulation.

• Current Sensing: The module uses a low-side sensing resistor; ensure you do not common-ground the input and output "Negative" pins externally, as this will bypass the current control feature.

Package Includes

• 1 x XL4015 5A DC-DC Adjustable Buck Converter Module

• 1 x Aluminum Heatsink (with adhesive backing)

Image Disclaimer

Product images are shown for illustrative purposes only. The color of the PCB (typically Blue) or the style of the multi-turn potentiometers may vary between batches, but the XL4015 5A high-power performance and CC/CV functionality remain as described.