The XL4015E1 5A Buck Converter with USB & LED Display is an upgraded, "all-in-one" power solution for precision enthusiasts. At Electrapac, we recommend this specific version because it eliminates the need for an external multimeter—the built-in digital display and USB port make it the ultimate tool for DIY charging and bench testing.

Product Overview

This module is a high-power Step-Down (Buck) converter that features a three-digit LED voltmeter and a convenient USB output port. It uses the robust XL4015E1 chip to handle up to 5A of current, making it far more powerful than standard LM2596 modules. Whether you need to power a 5V Raspberry Pi or a 12V LED strip from a 24V source, this module provides real-time monitoring at a glance.

Key Features for Electrapac Customers

• Self-Contained Voltmeter: The onboard digital display shows either the Input Voltage or the Output Voltage. No more fumbling with multimeter probes during adjustment!

• Dedicated USB Port: Includes a standard USB-A female port. When the output is set to 5V, it serves as a high-current (5A capable) charging port for smartphones and tablets.

• Dual Monitoring Buttons:

  • Left Button: Toggles the display ON/OFF (saves power).

  • Right Button: Switches the display between "IN" (Input) and "OUT" (Output) voltage.

• Calibratable Display: Features a hidden calibration mode, allowing you to fine-tune the LED display accuracy to match a professional multimeter.

• Included Heat Sink: Comes with a stick-on aluminum heatsink to ensure the XL4015E1 stays cool during high-power 75W operations.

Setup & Calibration Guide

To ensure your Electrapac module is perfectly tuned, follow these steps:

1. Input Connection: Connect your DC source (4V–38V) to the IN+ and IN- screw terminals.

2. Voltage Adjustment: Turn the brass screw on the blue potentiometer. Watch the LED display (set to "OUT" mode) until you reach your target voltage.

3. USB Safety: If you plan to use the USB port, you MUST manually adjust the output voltage to exactly 5.0V first. The USB port is tied directly to the output terminals; setting it to 12V will damage any USB device plugged in.

4. Heat Management: For continuous loads above 3.5A, apply the included heatsink to the main chip.

Primary Applications

• Variable Bench Power Supply: A compact, affordable power source for testing various components on your workbench.

• High-Power USB Charging: Stepping down 12V or 24V batteries to 5V for high-speed charging of multiple devices.

• Battery Step-Down: Running 12V equipment (like fans or routers) from a 24V or 36V battery bank.

• LED Driver: Providing a steady, adjustable voltage for high-brightness LED arrays.

• Car Electronics: Powering dash cams, GPS units, or 5V sensors from a vehicle's 12V
   battery.

Why Shop at Electrapac?

We source the XL4015E1 variant specifically for its superior thermal performance and high-accuracy voltage display. At , we provide the intelligent power modules that give you total control and visibility over your energy.