Description
Product Overview
The XL4016 300W Buck Converter is a high-performance, adjustable DC-DC step-down (buck) power module designed for applications demanding efficient voltage regulation at high currents. Based on the XL4016E1 chip from XLSEMI, this module features a built-in constant current (CC) and constant voltage (CV) control loop, making it incredibly versatile for a wide range of uses, from powering high-wattage LED arrays to charging lithium batteries .
Unlike standard voltage-only regulators, this module allows you to independently adjust both the output voltage and the output current limit. This “CC/CV” characteristic is essential for safely charging batteries and driving high-power LEDs without risk of overcurrent . With an input range of 7V to 40V DC and an adjustable output of 1.2V to 35V DC, it can handle up to 300W of power (with adequate cooling), delivering a continuous current of up to 9A .
The module operates at a high switching frequency (300kHz or 180kHz depending on version), which allows for smaller external components and low output ripple, ensuring stable power for sensitive electronics . It is equipped with a multi-turn potentiometer for precise voltage adjustment and another for current limiting, along with a dual-color LED indicator that shows whether the module is in constant current (CC) mode or constant voltage (CV) mode .
Key Features
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High Power & Current Capacity: Supports a maximum output power of approximately 300W and can deliver a continuous output current of up to 9A (8A continuous recommended, 9A peak) .
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CC/CV (Constant Current/Constant Voltage) Control: This dual-mode regulation allows the module to function as a standard voltage regulator (CV) or as a current limiter (CC), essential for battery charging and LED driving .
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Wide Adjustable Ranges: Input accepts DC 7-40V (up to 40V absolute max), output is continuously adjustable from 1.2V to 35V. The current limit is adjustable from 0.2A to 9A .
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High-Efficiency Conversion: Achieves a conversion efficiency of up to 95% (varies with input/output differential), minimizing energy loss and heat generation .
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Low Output Ripple: Output ripple is around 50mV (under typical conditions), making it suitable for low-noise analog circuits .
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Built-in Protection Features:
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Output Short Circuit Protection (Constant Current limiting) .
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Thermal Shutdown Protection (chip-level) .
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Input Reverse Polarity Protection: Not included (requires external diode) .
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Versatile Applications: Ideal for use as a high-power LED driver, lithium battery charger (1S-6S), adjustable bench power supply, or voltage regulator for motors and DIY projects .
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Dual-Color Status Indicator: A red LED indicates Constant Current (CC) mode, while a green LED indicates Constant Voltage (CV) mode.
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Input Voltage (VIN) | DC 7V – 40V (Absolute max 40V) |
| Output Voltage (VOUT) | DC 1.2V – 35V (Continuously Adjustable) |
| Output Current (Max) | 9A Peak (8A Continuous Recommended) |
| Constant Current Range | 0.2A – 9A (Adjustable) |
| Output Power (Max) | Approx. 300W (Requires active cooling/fan) |
| Conversion Efficiency | Up to 95% |
| Switching Frequency | 180kHz or 300kHz (Varies by version) |
| Output Ripple | ≤ 50mV (under typical loads) |
| Load Regulation | ±1% (Constant) |
| No-Load Current | Typical 20mA (Idle consumption) |
| Operating Temperature | -40°C to +85°C (Industrial grade) |
| Dimensions (PCB) | Approx. 65mm × 47mm × 22mm |
| Cooling Method | Passive heatsink (add fan for >150W) |
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