20A 300W DC-DC Step-Down Buck Converter Module CC/CV

he 20A 300W High-Power DC-DC Buck Converter is a professional-grade power module engineered for heavy-duty applications. Unlike standard voltage converters, this module features dual precision potentiometers for both Constant Voltage (CV) and Constant Current (CC) adjustment. This makes it the perfect solution for tasks requiring current limiting, such as safely charging Lithium or Lead-Acid batteries and driving high-power LEDs.

Robust Build Quality

Designed for stability and efficiency, the board utilizes dual 75V/80A high-current MOS tubes and high-frequency low-resistance electrolytic capacitors. This ensures an ultra-low output ripple (≤50mV) and conversion efficiency up to 97%.

Superior Thermal Management

To handle high power loads up to 300W, the module is equipped with two large aluminum heatsinks. These heatsinks dissipate heat effectively, ensuring reliable performance even during continuous heavy use.

Key Features

• Dual Control: Separately adjustable Output Voltage (CV) and Output Current (CC).

• High Power: Supports up to 20A max current (15A continuous recommended).

• Low Ripple: High-frequency capacitors ensure stable output with ripple ≤50mV.

• Secure Wiring: Features 30A high-current screw terminals for easy and tight connections.

• Safety: Output short-circuit protection (self-recovery) and LED status indicator.

Technical Specifications

Typical Application Scenarios

• Battery Charging: Safely charge 12V, 24V, or Lithium battery packs with current limiting.

• LED Driver: Drive high-power LED arrays with constant current.

• Solar Power: Regulate fluctuating voltage from solar panels to a stable output.

• Vehicle Power: Convert 24V truck power to 12V for electronics.

• Lab Supply: Create a robust adjustable bench power supply.

Package Includes

• 1 x 20A 300W DC-DC Step-down Buck Converter Module

Important Product Disclaimer

Please note that the product information provided on our website may not be entirely accurate as it is collected from various sources on the web. While we strive to provide the most up-to-date information possible, we cannot guarantee its accuracy. We recommend that you always read the product labels, warnings, and directions before using any product. Product images are shown for illustrative purposes only and may differ from the actual product.

Note

Usage Warning:

1. Active Cooling: For continuous use near 20A or 300W, adding a fan is strongly recommended to prevent overheating.

2. Input Polarity: This module does not have reverse polarity protection. Please ensure Input Positive (IN+) and Input Negative (IN-) are connected correctly, or the board will be damaged.

3. Step-Down Only: This is a Buck converter; the output voltage must always be lower than the input voltage.