XL4016E1 DC-DC 12A 300W Step-Down 5-40V to 1.2-35V Adjustable Power Supply Module

XL4016E1 DC-DC 12A 300W Step-Down 5-40V to 1.2-35V Adjustable Power Supply Module

The XL4016E1 300W Step-Down Module is a high-power DC-DC buck converter designed to transform high input voltages into a stable, lower output voltage. Featuring the dedicated XL4016 benchmark IC, it supports a massive 12A output current and provides both adjustable constant voltage (CV) and constant current (CC) regulation. This makes it an ideal “all-in-one” solution for charging batteries, driving high-power LED arrays, or acting as a versatile laboratory power supply. The XL4016E1 300W Step-Down Module is a staple for makers who need significant power delivery in a compact, low-cost footprint.

Features

• Dual Regulation Control: Features independent 3296 multi-turn potentiometers for highly precise tuning of both output voltage and current limits.

• Superior Thermal Management: Equipped with independent double heat sinks for the MOS and Schottky diodes, ensuring efficient heat dissipation without thermal interference.

• High Efficiency: Utilizes a large Sendust core and double pure copper wiring to reach a conversion efficiency of up to 95%.

• Clean Power Output: Incorporates four high-frequency capacitors to minimize output ripple, providing a stable voltage for sensitive electronics.

• Multipurpose Utility: Capable of driving high-power LEDs and charging various battery chemistries including Lithium, Ni-Cd, and Ni-MH.

Key Points

• The CC trimmer (nearest the output) sets the maximum current, while the CV trimmer (nearest the input) sets the target voltage.

• For continuous high-power operation (above 8A), adding a cooling fan is highly recommended to prevent thermal throttling.

• Includes onboard indicator lights that signal when a battery has reached its “float” voltage (fully charged).

• If the voltage doesn’t change when turning the trimmer, rotate it counter-clockwise for 20+ turns to engage the adjustment range.

Specifications