The XL4015E 5A / 75W module is a DC-DC Step-Down, or Buck converter, designed to reduce a DC input voltage to a lower adjustable output voltage.

The module includes an integrated digital voltmeter, allowing voltage to be monitored without permanently connecting an external multimeter.

The selection button switches the display between input voltage (IN) and output voltage (OUT). The module remembers the last selected measurement even after power is removed and reapplied.

The integrated voltmeter operates over a listed range of 4 to 48V, with a stated measurement error of approximately ±0.1V. Below 4V input, the integrated voltmeter does not operate correctly.

Maximum output current is listed as 5A, while the supplier recommends an operating current of approximately 4A.

The module includes screw terminals, allowing wires to be connected without soldering while retaining solder connection points on the PCB.

Input voltage must always be at least 1V higher than the required output voltage, as this is a step-down rather than step-up converter.

Main features

Product type: DC-DC Step-Down / Buck converter module
Main controller: XL4015E
Alternative code: XL4015E 5A
Advertised maximum power: 75W
Listed maximum current: 5A
Recommended operating current: approx. 4A
Regulation: adjustable output voltage
Display: integrated digital display
Voltmeter: integrated
Listed voltmeter range: 4 to 48V
Listed voltmeter error: approx. ±0.1V
Input voltage display: yes
Output voltage display: yes
IN indicator: yes
OUT indicator: yes
IN/OUT selection memory: yes
Display switch-off: yes
Voltmeter calibration: yes
Calibration range: -0.5V to +0.5V
Calibration memory: yes
Screw terminals: yes
Solder connection points: yes
USB output: yes
Conversion type: DC voltage step-down
Listed minimum input/output difference: input at least 1V above output
Dimensions: 66 × 38mm
Weight: 30.5g

Recommended applications

Adjustable DC power supplies
Electronics projects
Laboratory benches and prototyping
Arduino and microcontroller projects
DC voltage reduction
Powering electronic modules
Battery-powered projects
Power supply for compatible USB devices
Automation and DIY projects
Converting a higher DC voltage to a lower voltage

Important note

This is a Step-Down converter, so it can only reduce voltage. It cannot increase a lower input voltage to a higher output voltage.

The supplier specifies that the input voltage must be at least 1V higher than the output voltage.

Although maximum output current is listed as 5A, the supplier recommends operating at approximately 4A. Adequate ventilation and heat dissipation should be provided for prolonged high-current operation.

Always adjust and verify the output voltage before connecting the load. Incorrect voltage may damage the connected equipment.

Always observe correct input and output polarity and avoid short circuits.

This item corresponds only to the XL4015E converter module with display and USB. Power supply, cables, enclosure, additional cooling, battery and other components are not included unless expressly stated otherwise.