300W 20A DC-DC Buck Converter Step-down Module Constant Current LED Driver Module

The 300W 20A DC-DC Step-down Adjustable Constant Current Module is a high-performance voltage regulator with a wide input voltage range from 6V to 40V, capable of providing an adjustable output voltage ranging from 1.2V to 36V and a maximum output current of 20A. Here are the detailed specifications and features of this module:

  Features:  

1. Wide input voltage range from 6V to 40V.
2. Adjustable output voltage ranging from 1.2V to 36V.
3. High output current capacity of up to 20A (suggested continuous use up to 15A with additional cooling).
4. Dedicated benchmark IC and high-precision current sensing resistor for stable constant current (temperature drift less than 1% from 20°C to 100°C).
5. Six high-frequency capacitors for lower output ripple and improved stability.
6. Double heat sink design for efficient heat dissipation.
7. Large size Sendust Core and double pure copper wiring for improved efficiency and reduced heat.
8. Onboard 3296 multi-turn potentiometers for high accuracy voltage and current regulation.
9. Wide range of applications including LED drivers, battery charging, and vehicle power supply.
10. High efficiency up to 96% (measured at 20A, converting 24V to 12V).

  Specifications:  

• Input Voltage: 6V to 40V DC (10V to 40V suggested)
• Output Voltage: 1.2V to 36V DC
• Output Current: 20A max, 15A suggested for continuous use
• Efficiency: 95% (24V to 12V, 20A)
• Output Ripple: 50mV
• Wiring Method: Terminal
• Short Circuit Protection: Self-recovery (cannot short circuit for long time)
• Size: 60 x 53 x 27mm / 2.36 x 2.08 x 1.06€³

  Wiring Diagram:  

• VO+: Output positive
• VO-: Output negative
• +IN: Input positive
• -IN: Input negative
• CV: Output voltage adjustment
• CC: Output current adjustment
• EN: Enable, low voltage level shuts off output; suspension, high voltage level is effective

  Adjustment Instructions:  

1. When the module output voltage cannot be adjusted (the output voltage is always equal to the input voltage), adjust the potentiometer counterclockwise 20 laps (20 turns) or more till it works.
2. Turn trimmers CLOCKWISE to INCREASE, ANTICLOCKWISE to DECREASE.
3. When adjusting the blue potentiometer, use a multimeter to monitor the voltage.
4. The trimmer nearest the voltage output adjusts the output CURRENT (CC).
5. The trimmer nearest the voltage input adjusts the output VOLTAGE (CV).

  Package Included:  

• 1 x 300W 20A Step Down Buck Converter

This module is suitable for various high-power applications requiring a stable and adjustable voltage and current output, making it ideal for use in LED drivers, battery charging, and other high-power projects.