XL4015E DC-DC Buck Converter 5A 75W Adjustable Step Down Module
XL4015E DC-DC Buck Converter 5A 75W Adjustable Step Down Module
XL4015E DC-DC Step Down Buck Converter – 5A, 75W
The XL4015E is a high-power, high-efficiency DC-DC step-down (buck) converter module designed for makers, hobbyists, and electronics engineers. It converts input voltages from 4.0V to 38V down to a continuously adjustable output of 1.25V to 36V, delivering up to 5A of output current at a maximum efficiency of 96%. With an onboard self-calibrating voltmeter, dual adjustment buttons, screw terminals, and built-in protections, this compact module is a reliable choice for powering custom electronics projects, battery charging setups, DIY workbenches, and more.
Made in Mainland China.
Key Features
- Wide Voltage Range: Input 4.0V–38V; Output 1.25V–36V (continuously adjustable)
- High Efficiency: Up to 96% conversion efficiency
- High Output: Max 5A output current (4.5A or less recommended for sustained use); Max 75W output power
- Onboard Self-Calibrating Voltmeter: Microprocessor-based voltmeter with ±0.05V accuracy; measuring range 0–40V
- Dual Buttons: Convenient push-button voltage regulation — right button to increase, left button to decrease voltage
- Screw Terminals: Easy no-solder input/output connections; solder pads also available for permanent wiring
- Built-In Protections: Overheating protection and short-circuit protection for added reliability
- Heat Sink Included: Attached heatsink improves thermal dissipation during continuous operation
- Compact Size: 60 × 36 × 18 mm (2.36 × 1.41 × 0.7 inches)
Technical Specifications
| Input Voltage | 4.0V – 38V (input must be at least 1.5V above output) |
| Output Voltage | 1.25V – 36V (adjustable) |
| Output Current | Max 5A (4.5A or less suggested for continuous use) |
| Max Output Power | 75W |
| Max Efficiency | 96% |
| Load Regulation S(I) | ≤0.8% |
| Voltage Regulation S(u) | ≤0.8% |
| Voltmeter Accuracy | ±0.05V |
| Voltmeter Range | 0 – 40V |
| Dimensions | 60 × 36 × 18 mm / 2.36 × 1.41 × 0.7" |
Voltmeter Self-Calibration Instructions
- When the voltmeter displays output voltage, press and hold the right button for 2 seconds to enter output voltage calibration mode (display and output indicator light will flash together). Repeat with input voltage displayed to enter input calibration mode.
- Press the right button to increase the voltage value; press the left button to decrease it. Note: each press adjusts less than 0.1V — press 1–5 times to see a 0.1V change.
- When finished, press and hold the right button for 2 seconds and release to exit calibration mode. All settings are automatically saved even after power loss.
Tip: For best voltmeter accuracy, ensure input voltage is above 4.5V.
What's in the Box
- 1× XL4015E Step Down Buck Converter Module
- 1× Heatsink
- 4× Standoffs and Nuts
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Frequently Asked Questions
Q: What is the XL4015E DC-DC buck converter module used for?
A: The XL4015E step-down (buck) converter module is used to reduce a higher DC voltage to a lower, adjustable DC voltage. It's ideal for DIY electronics projects, custom power supplies, battery charging setups, robotics, and workbench power regulation where you need a stable, adjustable output voltage from a higher DC source.
Q: Do I need a soldering iron to connect this module?
A: No. The module features screw terminals for both input and output connections, making it easy to wire up without any soldering. However, solder pads are also available if you prefer a permanent, soldered connection.
Q: How do I adjust the output voltage on this step-down module?
A: Use the dual onboard buttons to adjust the output voltage. The right button increases the voltage and the left button decreases it. You can also fine-tune the onboard voltmeter's calibration by holding the right button for 2 seconds to enter calibration mode. All settings are saved automatically after power loss.
Q: What is the maximum continuous output current recommended for this module?
A: While the module supports a maximum of 5A output current, it is recommended to operate at 4.5A or less for continuous use to maintain stability and prolong the life of the module. Always ensure adequate ventilation and use the included heatsink.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.