XL7015 DC-DC Step-Down Buck Converter - 5V-80V Input Adjustable Power Module

Specifications

• Input Voltage Range: 5V to 80V DC

• Output Voltage Range: 5V to 20V DC (Continuously Adjustable)

• Output Current: Maximum 0.8A

• Conversion Efficiency: Up to 85%

• Switching Frequency: 150KHz

• Output Ripple: < 50mV

• Protections: Over-temperature, Short-circuit, Current limiting

• Board Dimensions: ~44mm x 16mm

Key Applications & Projects

• Electric Vehicles (EV/E-Bike): Dropping high-voltage battery packs (36V/48V/60V/72V) to 5V or 12V for lights, GPS, or USB chargers.

• Industrial Automation: Converting 24V PLC power rails to 3.3V/5V for custom sensors.

• Power over Ethernet (PoE): Extracting usable DC power from high-voltage networking lines.

• Solar Power Systems: Managing fluctuating high-voltage solar panel outputs for battery charging or IoT nodes.

Unlock New Capabilities (Project Evolution)

• Feature Upgrade: The XL7015 replaces bulky heat-generating linear regulators like the LM7805 in high-voltage setups. It converts excess voltage into current rather than heat, significantly extending your battery life.

• Effort Level: Beginner. Requires basic soldering to attach input and output wires.

Virtual Technician & Tips

• Probots™ Logic-Safe Setup: Always connect your multimeter to the VOUT/GND pads and adjust the potentiometer before connecting your sensitive electronics. This ensures your project never sees an accidental over-voltage spike.

• Pro Tip: For input voltages above 60V, we recommend adding a small electrolytic capacitor across the VIN and GND pads to absorb any initial voltage ripples or in-rush current.

PACKAGE INCLUDED

• 1 x XL7015 DC-DC Step-Down Adjustable Buck Module

FREQUENTLY ASKED QUESTIONS (FAQ)

• What is the maximum input voltage? This module safely handles up to 80V DC.
• Can it step up voltage? No, this is a "buck" or step-down converter; the output voltage must always be lower than the input.
• What is the maximum output current? It is rated for a continuous maximum of 0.8A.
• Is it reverse polarity protected? No, connecting the input voltage backward (VIN to GND) will damage the module instantly.
• How do I adjust the output voltage? Turn the brass screw on the blue "W103" potentiometer using a small screwdriver while monitoring the output with a multimeter.
• Does it get hot during operation? Due to its switching design, it stays much cooler than a linear regulator, but it may get warm if drawing the full 0.8A at high voltage drops.
• What is the minimum input voltage needed for 12V output? The input must be at least 1-2V higher than the desired output (approx. 14V for a stable 12V output).
• Can I use this for 24V industrial systems? Yes, it is excellent for 24V to 5V conversions.
• Is it compatible with 72V e-bike batteries? Yes, it handles up to 80V, making it perfect for 72V systems that might peak at 78V-79V when fully charged.
• What are the mounting hole sizes? This module is designed for direct soldering or breadboard mounting and does not include dedicated screw mounting holes.
• Can I use it to charge a phone? Yes, if adjusted to 5.0V, it can provide up to 0.8A for charging mobile devices.
• What is the switching frequency? It operates at approximately 150KHz.
• Is the output voltage stable? Yes, it features an internal feedback loop to maintain a consistent output voltage even as the input voltage fluctuates.
• What does "W103" mean on the part? It identifies the 10k Ohm multi-turn potentiometer used for voltage adjustment.
• Does it include the wires? No, you must solder your own wires to the designated pads.
• Is there a power LED indicator? This specific board layout does not feature a power LED to save on quiescent current draw.
• Can I parallel two of these for more current? Paralleling buck converters is not recommended without specialized load-sharing circuitry.
• What is the board size? It is approximately 44mm long and 16mm wide.
• Can it handle 80V AC? No, this is a DC-DC converter only.
• Is it CE/RoHS compliant? The PCB features standard compliance markings on the bottom layer.