Keszoox
XL4015 DC-DC Step-Down Module — 5A CC/CV Adjustable Buck Converter for Lithium Battery Charging
XL4015 DC-DC Step-Down Module 5A CC/CV Adjustable Buck Converter for Lithium Battery Charging
Couldn't load pickup availability
XL4015 DC-DC Step-Down Module — 5A CC/CV Adjustable Buck Converter
The XL4015 DC-DC step-down module is a high-current constant-current / constant-voltage (CC/CV) buck converter designed for lithium battery charging, LED driver applications, and adjustable bench power supply use. Based on the XL4015 PWM switching regulator IC, it delivers up to 5A continuous output current with independently adjustable output voltage and current via onboard potentiometers. Two LED indicators show CV (constant voltage) and CC (constant current) operating modes.
Key Specifications
| Parameter | Value |
|---|---|
| IC | XL4015 |
| Input Voltage | 8V – 36V DC |
| Output Voltage | 1.25V – 32V DC (adjustable) |
| Max Output Current | 5A |
| Control Mode | CC/CV (Constant Current / Constant Voltage) |
| Efficiency | Up to 96% |
| Switching Frequency | 180kHz |
| Operating Temperature | −40°C to +85°C |
| Indicators | CV mode LED + CC mode LED |
| Origin | CN |
Why Choose CC/CV Buck Converters?
- Safe lithium battery charging — CC/CV profile matches the standard lithium-ion and LiFePO4 charging algorithm: constant current bulk phase, then constant voltage absorption phase
- Independently adjustable V and I — Set output voltage with one potentiometer and current limit with another; no interaction between the two adjustments
- High efficiency — Up to 96% conversion efficiency minimizes heat generation at full load; onboard heatsink handles sustained 5A output
- Wide input range — 8–36V input covers 12V, 24V, and variable solar panel inputs
- Mode indicators — CV/CC LEDs show operating mode at a glance during charging or load testing
Typical Applications
- Single-cell and multi-cell lithium battery (Li-ion, LiPo, LiFePO4) charging
- Adjustable bench power supply for electronics prototyping
- High-power LED driver with constant current control
- Solar panel MPPT output regulation (non-MPPT, fixed setpoint)
- Lead-acid battery maintenance charging
- Motor speed control via voltage adjustment
Frequently Asked Questions
Q: Can I use this to charge a 3S lithium pack (12.6V)?
Yes. Set the output voltage to 12.6V (3S full charge voltage) and the current limit to your desired charge rate (e.g., 1C of the pack capacity). Ensure the input voltage is at least 2–3V above the output voltage (minimum ~15V input for 12.6V output).
Q: Does it have short-circuit protection?
The CC mode provides inherent current limiting that protects against overload. For hard short-circuit protection, add an external fuse on the input side rated slightly above your maximum operating current.
Package Contents
- 1× XL4015 DC-DC Step-Down CC/CV Module
