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XL4015 5A DC-DC Step-Down CC/CV Module — 75W, 5–32V to 1.2–32V, Li Battery Charger
XL4015 5A DC-DC Step-Down CC/CV Module 75W, 5–32V to 1.2–32V, Li Battery Charger
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XL4015 5A DC-DC Step-Down CC/CV Module — 75W, 5–32V to 1.2–32V, Li Battery Charger
This XL4015-based step-down (buck) converter module provides both constant-voltage (CV) and constant-current (CC) output modes, making it a versatile power supply for lithium battery charging, LED driver applications, and adjustable bench power supply use. With 5A output current, 75W maximum power, and 5–32V input range, it covers a wide range of DC-DC conversion needs. Two onboard potentiometers independently adjust output voltage and current limit.
Key Specifications
| Parameter | Value |
|---|---|
| Controller IC | XL4015 |
| Input Voltage | 5V – 32V |
| Output Voltage | 1.2V – 32V (adjustable, must be < Vin) |
| Max Output Current | 5A |
| Max Output Power | 75W |
| Output Modes | CC (constant current) + CV (constant voltage) |
| Switching Frequency | 180kHz |
| Efficiency | Up to 96% |
| Voltage Adjustment | Onboard potentiometer (CV) |
| Current Adjustment | Onboard potentiometer (CC) |
| Indicators | CV/CC mode LED indicator |
XL4015 CC/CV Module vs Common Alternatives
| Module | Max Current | CC Mode | Max Power | Best For |
|---|---|---|---|---|
| XL4015 CC/CV (this) | 5A | Yes | 75W | Li battery charging, LED driver, bench supply |
| MT3608 Boost | 2A | No | ~24W | Voltage step-up only |
| LM2596 Buck | 3A | No | ~40W | Simple voltage step-down |
| TP4056 Module | 1A | Yes (Li-ion only) | 5W | Single-cell Li-ion charging only |
Why Choose XL4015 CC/CV Module?
- Dual CC/CV mode — constant current for battery charging and LED driving; constant voltage for power supply use
- 5A / 75W capability — charges large Li-ion packs and drives high-power LED arrays
- Independent V and I adjustment — two separate potentiometers for precise voltage and current limit setting
- CV/CC LED indicator — shows when module is in current-limiting (CC) mode vs voltage regulation (CV) mode
- 96% peak efficiency — minimal heat generation at high power levels
Compatible With / Common Use Cases
- Li-ion / LiPo battery charging: Set CV=4.2V (single cell) or 8.4V (2S), CC=desired charge current (e.g., 1A for 1C charge of 1000mAh cell)
- Lead-acid battery charging: Set CV=14.4V (12V battery), CC=10% of Ah rating
- High-power LED driver: Set CC to LED rated current (e.g., 700mA for 1W LED, 3A for 10W LED array)
- Adjustable bench power supply: 12V adapter input, adjustable 1.2–11V output with current limiting
- Solar charge controller: Step down solar panel voltage to battery charging voltage with current limit
Frequently Asked Questions
Q: How do I set up XL4015 module for charging a 3S LiPo battery?
A: Set CV = 12.6V (3 × 4.2V full charge voltage). Set CC = desired charge current (e.g., 2A for a 2000mAh pack at 1C). Connect input to a 15–20V supply. Connect battery to output. The module will charge in CC mode until battery reaches 12.6V, then switch to CV mode (LED changes). Disconnect when current drops to ~10% of CC setting (200mA for 2A CC).
Q: How do I adjust the output voltage and current?
A: Connect input power and a voltmeter/ammeter to the output. Turn the voltage potentiometer (labeled V or CV) to set output voltage. For current limit: connect a load or short the output through an ammeter, then turn the current potentiometer (labeled I or CC) to set the current limit. Always set voltage first, then current.
Q: Does the XL4015 module need a heatsink at 5A output?
A: Yes. At 5A output, the onboard inductor and XL4015 IC generate significant heat. Attach a heatsink to the XL4015 IC (the large black IC on the board) and ensure adequate airflow. For continuous 5A operation, add forced air cooling. Derate to 3–4A for passive cooling in enclosed spaces.
Package Contents
- 1× XL4015 5A DC-DC Step-Down CC/CV Converter Module
