300W 20A DC-DC Step-Down Buck Converter Module (6-40V to 1.2-35V)

IOT-DC-BK300W-35V

High-power 300W 20A DC-DC step-down buck converter. Input 6-40V to adjustable 1.2-35V output. Features CC/CV control, making it perfect for LED driving, solar charging, and DIY power supplies. Large heatsink for efficient cooling.

1,200 Lek
2-3 days
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Description
Feature Specification
Reference Code IOT-DC-BK300W-35V
Module Type Synchronous Rectifier Non-Isolated Step-Down (CC/CV)
Input Voltage 6V - 40V DC
Output Voltage 1.2V - 35V DC (Continuously Adjustable)
Output Current 15A Continuous (Up to 20A max; requires cooling fan if >65°C)
Current Limit Range (CC) 0.2A - 20A (Adjustable)
Minimum Voltage Drop 3V
Operating Frequency 150 KHz
Conversion Efficiency Up to 96%
Protections Output Short Circuit (instantaneous)
Operating Temperature -10°C to +75°C
Wiring Method Terminal Blocks
Dimensions 60mm x 53mm x 30mm

This heavy-duty 300W DC-DC step-down (buck) converter is an incredibly versatile power module designed for high-current applications. Featuring synchronous rectification technology, it efficiently steps down an input voltage of 6V-40V to a highly stable, adjustable output of 1.2V-35V. It is equipped with dual potentiometers, allowing you to precisely control both Constant Voltage (CV) and Constant Current (CC).

Because of its CC/CV capabilities, this module is highly recommended for driving high-power LEDs safely, charging various battery types (including Lithium, Ni-Cd, Ni-MH, and lead-acid batteries up to 24V), or regulating unstable power from solar panels and wind generators. The large dual aluminum heatsinks handle thermal dissipation excellently, allowing for a continuous 15A draw. For loads pushing toward the 20A maximum, adding an external cooling fan is required.

Important Notes: This module does not have input reverse polarity protection or output anti-backflow. If you are using it to charge batteries or drive inductive loads, please ensure correct wiring and add an external diode to the output if necessary.

Product Details
IOT-DC-BK300W-35V
4 Items
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