300W 10A DC-DC Step-down Buck Converter Adjustable Constant Voltage Module

300W 10A DC-DC Step-Down Buck Converter Module

Product Description

The 300W 10A DC-DC Step-Down Buck Converter Module is a high-power non-isolated converter designed to reduce higher DC voltages to a lower adjustable output. It supports 6V–40V input and provides an adjustable 1.2V–36V output, making it suitable for power supplies, battery charging, LED driving, solar systems, motor control, and automotive applications.

With conversion efficiency of up to 95% and a large built-in heatsink, the module is designed to provide stable performance under high-current loads.

Adjustable Output

The module allows continuous adjustment of the output voltage from 1.2V to 36V DC, making it suitable for applications requiring different regulated voltage levels.

High-Power Performance

With a maximum output capability of 300W and 10A, the converter can handle demanding DC power applications. For continuous operation near maximum current or power, additional cooling such as a fan is recommended.

Thermal Management

The integrated large heatsink helps dissipate heat generated during voltage conversion, improving stability and reliability during high-load operation.

Key Features

• High-power 300W buck converter
• 6V–40V DC input range
• Adjustable 1.2V–36V DC output
• Up to 10A output current
• Up to 95% conversion efficiency
• Large built-in heatsink
• High-frequency switching regulation
• Short-circuit protection/current limiting
• Compact design
• Suitable for DIY and power electronics projects

Technical Specifications

Feature	Specification
Module Type	Non-Isolated Step-Down Buck Converter
Input Voltage	6V – 40V DC
Output Voltage	1.2V – 36V DC Adjustable
Output Current	0 – 10A Max
Maximum Output Power	300W
Efficiency	Up to 95%
Operating Temperature	-40°C to +85°C
Cooling	Built-in Heatsink

Working Principle

The module uses a high-frequency switching regulator to convert a higher DC input voltage into a lower adjustable DC output voltage. The output voltage can be adjusted according to the requirements of the connected load.

Because this is a buck converter, the output voltage must always be lower than the input voltage.

Typical Application Scenarios

DIY Power Supply

Suitable for building an adjustable laboratory or bench power supply.

Battery Charging

Can be used for charging compatible lithium and lead-acid batteries when the correct charging voltage and current are configured.

High-Power LED Driver

Suitable for powering high-power LED lighting systems with an appropriate current-control arrangement.

Solar Regulation

Can regulate DC power from solar panels to provide a lower usable voltage.

Motor Control

Useful for supplying suitable reduced DC voltage to DC motor systems.

Automotive Applications

Can be used for voltage conversion such as 24V to 12V for suitable automotive electronics.

Applications

• DIY laboratory power supplies
• Battery charging
• High-power LED systems
• Solar power regulation
• DC motor applications
• Automotive voltage conversion
• Embedded power systems
• Electronics projects
• Adjustable DC power supplies
• Robotics power systems

Package Includes

• 1 × 300W 10A DC-DC Step-down Buck Converter Adjustable Constant Voltage Module

Product Disclaimer

Product information may vary between manufacturers, suppliers, and production batches. Please verify the actual product specifications before using the module in critical or high-power applications.

Product images are for illustrative purposes only and may differ from the actual product in colour, component placement, heatsink design, or other visual details.

Important Note

Input and Output Polarity

Always verify the input and output polarity before connecting the module to a power source or load. Reverse polarity may damage the converter.

Cooling

For continuous operation near 300W or 10A, additional cooling such as a fan may be required to prevent overheating.

Maximum Input Voltage

Do not exceed the specified 40V DC maximum input voltage.

Step-Down Operation

The output voltage must remain lower than the input voltage, as this module is a step-down buck converter.

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