Description
Description
The 5A XL4015 CC-CV Step-Down Power Module is a versatile, high-performance DC-DC buck converter designed for applications requiring precise constant current (CC) and constant voltage (CV) regulation. Whether you need to charge lithium batteries, drive high-power LEDs, or create a benchtop power supply with adjustable current limiting, this module delivers reliable, efficient performance.
At the heart of this module is the XL4015 chip from XLSEMI – a 180KHz to 300KHz fixed frequency PWM buck converter that integrates a high-current 5A power MOSFET . This advanced design achieves conversion efficiencies of up to 96%, significantly outperforming older LM2596-based modules .
Built-in Dual Display: Unlike standard voltage-only regulators, this module features a built-in dual LED display that shows both output voltage and output current in real-time . The upper display shows voltage, while the lower display shows current, allowing you to monitor your application at a glance without needing an external multimeter.
CC-CV (Constant Current – Constant Voltage) Explained:
This module operates in two distinct modes, automatically switching between them based on load conditions :
| Mode | Description | When Active |
|---|---|---|
| Constant Current (CC) | Output current is held at the user-set limit; voltage drops as needed | When load tries to draw more than the set current (e.g., charging a deeply discharged battery) |
| Constant Voltage (CV) | Output voltage is held at the user-set value; current varies with load | When load draws less than the set current limit (e.g., battery near full charge) |
Key Applications :
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Lithium Battery Charger: Set the float voltage (e.g., 4.2V for single Li-Ion cells) and charging current – the module automatically switches from CC to CV when the battery reaches full charge. Dual LED indicators show charging status.
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LED Constant Current Driver: Drive high-power LEDs at their specified current (e.g., 3A, 5A) without needing additional resistors. The module maintains a constant current regardless of LED forward voltage variations.
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Adjustable Bench Power Supply: With built-in current limiting and real-time voltage/current display, this module can power sensitive circuits safely – if your prototype shorts, the current limit prevents damage .
Comprehensive Protection Features :
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Built-in thermal shutdown – automatically shuts down when overheated
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Current limiting – user-adjustable from 0-5A via onboard potentiometer
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Output short protection – protects module and load during fault conditions
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Over-temperature protection – auto-restart when temperature normalizes
Important Operating Note: This module is a step-down (buck) converter only. The input voltage must always be at least 1.5V higher than the desired output voltage. It cannot step up voltage .
Whether you are building a custom battery charger, designing an LED lighting system, or creating a safe benchtop power supply, the XL4015 CC-CV module with voltage and current display provides the precision, power, and visibility you need.
Key Features
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Dual LED Display – Built-in display shows output voltage (upper) and output current (lower) in real-time; no external multimeter needed for monitoring
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CC-CV (Constant Current – Constant Voltage) Control – Independently adjustable current limit (0-5A) and output voltage for battery charging and LED driving
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5A Maximum Output Current – Integrated 5A power MOSFET delivers up to 5A peak (3A-4A recommended continuous with adequate cooling)
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Wide Input Voltage Range – Accepts DC 5V to 38V input (8V-36V recommended), compatible with 12V, 24V, and 36V power systems
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Adjustable Output Voltage – Output can be set from 0.8V to 30V via onboard multi-turn potentiometer
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High Conversion Efficiency – Up to 96% efficiency minimizes power loss and heat generation
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75W Maximum Output Power – Capable of delivering up to 75W output power (with adequate cooling)
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Comprehensive Protection – Built-in thermal shutdown, over-current limiting, and output short protection
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Low Output Ripple – <50mV typical ripple provides clean DC output for sensitive electronics
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Wide Operating Temperature – -40°C to +85°C for reliable operation in various environments
Technical Parameters
| Parameter | Value |
|---|---|
| Input Voltage Range | DC 5V – 38V (8V-36V recommended, max 38V) |
| Output Voltage Range | DC 0.8V – 30V (adjustable) |
| Output Current Range | 0 – 5A (adjustable current limit) |
| Output Power (Max) | 75W (with adequate cooling) |
| Conversion Efficiency | Up to 96% |
| Switching Frequency | 180KHz – 300KHz |
| Output Ripple | < 50mV (typical) |
| Load Regulation | ±0.5% |
| Voltage Regulation | ±2.5% |
| Operating Temperature | -40°C to +85°C |
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