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Small green circuit board with blue screw terminals and a black inductor, 61.7 by 26.2 by 15 millimetres

JacobsParts Inc.

JacobsParts Inc. DCMOD-J XL4015 36V 5A Buck Converter Power Module

SKU CH-HRW2-KZXJS

A step-down voltage regulator that delivers an adjustable 1.25-36V output from a 5-38V input with up to 96% efficiency and 5A peak current

  • TypePower Regulator
  • Input Voltage4-38V
  • Stable voltage across a wide 5-38V input range
  • Adjustable 1.25-36V output suits many projects
  • Up to 96% conversion efficiency reduces waste heat
  • Over-current and thermal protection guard the module
  • Compact 61.7x26.2x15mm board fits tight spaces

DC Buck Converter Module

The JacobsParts DCMOD-J XL4015 is a step-down power regulator built for hobbyists and engineers who need adjustable voltage from a higher DC source. It suits battery charging, solar projects, LED drivers, automotive electronics and micro-controller supply rails where a stable, current-limited output is required.

35 W Sustained / 75 W Peak Headroom

The module delivers up to 5 A peak at 75 W and 3 A sustained at 35 W, whichever limit is reached first. Output voltage spans 1.25 V to 36 V from a 5 V to 38 V input, provided the input stays at least 2 V above the set output. Efficiency reaches up to 96 percent, so thermal load stays modest at typical currents.

XL4015 180 kHz Switching Constraints

The XL4015 controller runs at 180 kHz with over-current and thermal protection plus LED status indicators. Input and output grounds must remain isolated and reverse polarity on either side can damage the unit. The 61.7 mm by 26.2 mm by 15 mm footprint fits compact enclosures, but the fixed switching frequency and minimum voltage differential set the practical boundaries for any design.

Highlights

  • Stable voltage across a wide 5-38V input range
  • Adjustable 1.25-36V output suits many projects
  • Up to 96% conversion efficiency reduces waste heat
  • Over-current and thermal protection guard the module
  • Compact 61.7x26.2x15mm board fits tight spaces

Specifications

BrandJacobsParts
ModelDCMOD-J
TypePower Regulator
Input Voltage4-38V

Questions about this item

Will the XL4015 module step down a 38 V supply from an older power source to 1.25 V for a legacy microcontroller board?

Yes, the input range reaches 38 V and the output can be set as low as 1.25 V, provided the input stays at least 2 V above the desired output.

How can I confirm the DCMOD‑J is regulating correctly after wiring it?

The on‑board LED indicators show the module is active; measure the output with a multimeter to verify it matches your set voltage under load.

What comes with the XL4015 buck converter and what must I source separately?

The module itself is supplied; you will need to provide input power leads, output wiring, and any heatsink if you plan to run near the 35 W sustained limit.

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