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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Frequently Asked Questions

1. What is this module?

It is a 300W high-power DC-DC step-down buck converter designed to reduce DC input voltage to a lower adjustable output.

2. What is the input voltage range?

The input voltage range is 6V–40V DC.

3. What is the output voltage range?

The output can be adjusted from 1.2V to 36V DC.

4. What is the maximum output current?

The maximum specified output current is 10A.

5. What is the maximum output power?

The module is rated for up to 300W.

6. What is the efficiency?

The specified maximum conversion efficiency is up to 95%.

7. Does the module have a heatsink?

Yes. It includes a large built-in heatsink for heat dissipation.

8. Can it be used for battery charging?

Yes. It can be used for compatible lithium and lead-acid battery charging when configured with the correct voltage and current requirements.

9. Can it be used for high-power LEDs?

Yes. It can be used in suitable high-power LED applications.

10. Can it convert 24V to 12V?

Yes. It can perform step-down conversion such as 24V to 12V, provided the input and load requirements are within the module's ratings.

11. Does it have short-circuit protection?

The supplied specifications state that it provides short-circuit protection/current limiting.

12. Is additional cooling required?

For continuous operation close to 10A or 300W, additional cooling such as a fan is recommended.

13. Can the output be higher than the input?

No. This is a step-down buck converter, so the output voltage must be lower than the input voltage.

14. What is included in the package?

The package includes 1 × 300W 10A DC-DC Step-down Buck Converter Adjustable Constant Voltage Module.

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