XL7015 DC-DC Step Down Adjustable Power Supply Buck Module (5V - 80V DC Input, High Voltage Step-Down Converter)

Step down high DC voltages efficiently with the XL7015 DC-DC Step Down Adjustable Power Supply Buck Module. Engineered for wide input voltage applications such as electric vehicles (EV/E-bikes), 24V/48V industrial lines, solar power, and telecom systems, this high-voltage step-down regulator accepts an ultra-wide input range from $5 ext{V}$ to $80 ext{V DC}$ and provides an adjustable output from $1.25 ext{V}$ to $20 ext{V DC}$ . Delivering up to $0.8 ext{A}$ ( $800 ext{mA}$ ) output current with $150 ext{ kHz}$ switching frequency and up to $90%$ conversion efficiency, it offers thermal shutdown and short-circuit protection in an ultra-compact footprint.

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Tags XL7015 Buck Converter High Voltage DC-DC Step Down Module 80V Input DC-DC Regulator E-Bike 48V 60V to 5V 12V Converter Adjustable Buck Power Supply 800mA Step Down Board Solar Battery Step Down Module

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Product Details :

The XL7015 DC-DC Step Down Adjustable Power Supply Buck Module is a high-efficiency, high-voltage monolithic buck switching regulator designed specifically for power conversion in high-voltage DC environments. Unlike standard buck converters limited to $30 ext{V}$ or $40 ext{V}$ input ceilings (such as the LM2596), the XL7015 handles sustained input voltages up to $80 ext{V DC}$ , making it ideal for stepping down battery voltages in $36 ext{V}$ , $48 ext{V}$ , $60 ext{V}$ , and $72 ext{V}$ electric vehicle platforms, industrial automation control lines, and solar charging installations.

Operating at a fixed switching frequency of $150 ext{ kHz}$ , the module provides smooth output regulation from $1.25 ext{V}$ up to $20 ext{V DC}$ using an onboard multi-turn precision potentiometer. With a continuous output current rating of $0.8 ext{A}$ ( $800 ext{mA}$ ) and built-in protective features including thermal shutdown, current limiting, and output short-circuit protection, the XL7015 delivers reliable, low-ripple power to sensitive downstream logic boards, microcontrollers, and sensors.

Key Features and Benefits

Ultra-Wide Input Voltage Range ( $5 ext{V} - 80 ext{V DC}$ ): Directly connects to high-voltage sources like $48 ext{V}/60 ext{V}/72 ext{V}$ EV battery packs and $24 ext{V}/48 ext{V}$ industrial power buses.
Adjustable Output Voltage ( $1.25 ext{V} - 20 ext{V DC}$ ): Easily trimmed using the high-precision blue multi-turn trimmer resistor.
High Efficiency Step-Down Operation: Up to $90%$ conversion efficiency minimizes power loss compared to inefficient linear power regulators.
Integrated Comprehensive Protection: Built-in over-temperature shutdown, cycle-by-cycle over-current limiting, and output short-circuit protection.
$150 ext{kHz}$ Switching Frequency: Fast dynamic response with low output ripple voltage.
Ultra-Slim Footprint ( $44 imes16 ext{ mm}$ ): Compact profile easily mounts into tight battery compartments, control boxes, or custom enclosures.

Technical Specifications

Feature Component	Specification Details
Module Model	XL7015 Buck Converter Board
Topology	Step-Down (Buck) Switching Regulator
Input Supply Voltage ( $V_{IN}$ )	$5.0 ext{V DC to } 80.0 ext{V DC}$
Output Voltage Range ( $V_{OUT}$ )	$1.25 ext{V DC to } 20.0 ext{V DC}$ (Continuously Adjustable)
Maximum Output Current	$0.8 ext{ A}$ ( $800 ext{ mA}$ )
Maximum Continuous Output Power	$pprox 7 ext{W}$ (Without external forced-air cooling)
Conversion Efficiency	Up to $85% - 90%$ (Varies with voltage differential and load)
Switching Frequency	$150 ext{ kHz}$
Output Ripple	$< 30 ext{ mV}$
Operating Temperature	$-40^circ ext{C to } +85^circ ext{C}$

Wiring & Pinout Guide

1. Pin Description:

Pad Label	Pin Function	Wiring Connection
$VIN+$	Positive DC Input	Connect to High Voltage DC Source Positive ( $+5 ext{V to }+80 ext{V DC}$ )
$VIN-$ / $GND$	Common Input Ground	Connect to High Voltage DC Source Negative ( $GND$ )
$VOUT+$	Positive Regulated DC Output	Connect to Load / Microcontroller Positive Terminal
$VOUT-$ / $GND$	Common Output Ground	Connect to Load / Microcontroller Ground ( $GND$ )

2. Connection Layout Table:

Pad Label	Connection Target	Recommended Cable Type
$VIN +$	$+5 ext{V to }+80 ext{V}$ Power Supply / EV Battery Positive	20 AWG – 22 AWG Copper Wire
$VIN -$	Power Supply / EV Battery Ground ( $GND$ )	20 AWG – 22 AWG Copper Wire
$VOUT +$	Regulated Output Load Positive ( $+5 ext{V}, +12 ext{V}$ , etc.)	22 AWG Silicon Hookup Wire
$VOUT -$	Regulated Output Load Ground ( $GND$ )	22 AWG Silicon Hookup Wire

IMPORTANT OPERATING NOTES:

Adjust Before Connecting Load: Always connect a digital multimeter to $VOUT+$ and $VOUT-$ , power the input, and adjust the potentiometer to your target output voltage (e.g., $5.0 ext{V}$ ) BEFORE wiring to sensitive microcontrollers or sensors.

Step-Down Only: As a buck converter, the input voltage must always remain higher than the target output voltage by at least $1.5 ext{V} - 2.0 ext{V}$ .

Input Polarity Check: The module lacks reverse polarity protection on the input pads. Reversing $VIN+$ and $VIN-$ will destroy the XL7015 IC instantly.

Applications

Electric Vehicles (EV) & E-Bikes: Stepping down $36 ext{V}$ , $48 ext{V}$ , or $60 ext{V}$ battery power to $5 ext{V}$ or $12 ext{V}$ for lights, horn relays, USB chargers, and GPS trackers.
Industrial Controls: Regulating $24 ext{V}$ or $48 ext{V}$ industrial bus lines down to $3.3 ext{V}/5 ext{V}$ for PLC interface boards and sensors.
Solar Power Systems: Direct step-down power regulation from high-voltage solar panel array strings.
Telecommunications: Power regulation for $48 ext{V}$ telecom equipment and remote radio modules.