20A 300W High-Power DC-DC Adjustable Buck Converter Module with Constant Voltage & Constant Current Protection

The 20A 300W High-Power DC-DC Adjustable Buck Converter Module is a high-current step-down power supply designed to convert higher DC input voltages into stable adjustable lower output voltages. With Constant Voltage (CV), Constant Current (CC) regulation and short circuit protection, it is ideal for battery charging, LED drivers, laboratory power supplies, solar systems and industrial electronics.

Product Description

The 20A 300W High-Power DC-DC Adjustable Buck Converter Module is a reliable step-down voltage regulator designed for applications that require stable, adjustable DC output with high current capability. Supporting an input voltage range of 6V to 40V DC and an adjustable output voltage from 1.2V to 36V DC, this module efficiently converts higher input voltages into regulated lower output voltages while maintaining excellent performance.

The module features Constant Voltage (CV) and Constant Current (CC) operation, making it suitable for charging lithium-ion, LiFePO₄ and lead-acid batteries, driving high-power LEDs and powering sensitive electronic equipment. Integrated short circuit protection improves operational safety, while the large heatsink ensures effective heat dissipation during demanding applications.

Designed for engineers, technicians, students and DIY electronics enthusiasts, this buck converter is widely used in laboratory power supplies, solar energy systems, automotive electronics, CNC equipment, robotics and industrial automation. Precision adjustment potentiometers allow accurate voltage and current settings, while screw terminals provide secure and convenient wiring. Whether you're building a custom power supply or upgrading an existing DC system, this 300W buck converter delivers efficient, stable and dependable voltage regulation.

Key Features

• High-Power DC-DC Step-Down Converter
• Adjustable Constant Voltage (CV)
• Adjustable Constant Current (CC)
• Up to 300W Power Rating
• Up to 20A Current Rating
• Integrated Short Circuit Protection
• High Conversion Efficiency
• Precision Voltage Adjustment
• Precision Current Adjustment
• Large Aluminium Heatsink
• Screw Terminal Connections
• Suitable for Industrial & DIY Electronics

Technical Specifications

Applications

• Battery Charging Systems
• LED Driver Circuits
• Laboratory Power Supplies
• Solar Energy Projects
• Automotive Electronics
• CNC Machines
• Robotics
• Industrial Automation
• DIY Electronics
• Embedded Systems

Compatibility

Compatible with:

• Lithium-Ion Batteries
• LiFePO₄ Batteries
• Lead Acid Batteries
• 12V Battery Systems
• 24V Battery Systems
• LED Lighting Systems
• Solar Power Systems
• Robotics Projects
• Industrial DC Equipment

Package Includes

• 1 × 20A 300W High-Power DC-DC Adjustable Buck Converter Module

Important Notes

• This is a Step-Down (Buck) Converter and cannot increase voltage.
• The input voltage must always be higher than the desired output voltage.
• Verify the output voltage before connecting sensitive electronics.
• Use additional cooling during continuous high-current operation.
• Ensure correct input and output polarity before powering the module.

Setup Guide

Output Voltage Adjustment

1. Connect the DC input power supply.
2. Measure the output voltage with a digital multimeter.
3. Rotate the voltage adjustment potentiometer until the desired output voltage is achieved.
4. Verify the output voltage before connecting your load.

Current Limit Adjustment

1. Connect a suitable test load.
2. Adjust the current potentiometer until the required current limit is reached.
3. Confirm the setting using an ammeter before regular operation.

Why Buy from Chip.pk?

• Genuine electronic components
• Quality-tested products
• Competitive retail & wholesale pricing
• Fast delivery across Pakistan
• Secure packaging
• Technical support before purchase
• Trusted supplier for students, engineers and industrial users

Frequently Asked Questions (FAQs)

Is this a buck converter?

Yes. It is a DC-DC Step-Down (Buck) Converter that reduces a higher input voltage to a lower adjustable output voltage.

Can I charge lithium batteries with this module?

Yes. The Constant Voltage and Constant Current functions make it suitable for charging lithium-ion, LiFePO₄ and lead-acid batteries when configured correctly.

Does it include short circuit protection?

Yes. The module features built-in short circuit protection to improve operational safety.

What is the maximum output current?

The module is rated for up to 20A peak, while adequate cooling is recommended for continuous high-current operation.

Can I use it for LED drivers?

Yes. It is suitable for powering high-power LED lighting systems with adjustable voltage and current control.