20A 300W DC-DC Step-Down Buck Converter Module CC/CV
₹354.00 incl. GST (₹300.00 + GST)
The 20A 300W High-Power DC-DC Buck Converter is a heavy-duty step-down module with adjustable Constant Voltage (CV) and Constant Current (CC) control. It supports 6V–40V input, 1.2V–36V output, and up to 20A current, with efficiency up to 97%. Ideal for battery charging, high-power LED driving, solar systems, vehicle electronics, and adjustable power supplies.
20A 300W High-Power DC-DC Buck Converter Module
Product Description
The 20A 300W High-Power DC-DC Buck Converter is a heavy-duty adjustable step-down power module designed for applications requiring high output current and precise voltage regulation. It features separate Constant Voltage (CV) and Constant Current (CC) adjustment controls, making it suitable for battery charging, high-power LED driving, solar power regulation, vehicle electronics, and adjustable power supplies.
The module supports an input voltage of 6V–40V DC and provides an adjustable output of 1.2V–36V DC, with a maximum output current of 20A and recommended continuous current of 15A.
Adjustable CV & CC Control
The module provides independent potentiometers for adjusting:
Constant Voltage (CV)
Allows the output voltage to be adjusted from approximately 1.2V to 36V DC.
Constant Current (CC)
Allows the user to set an output current limit from 0A to 20A, making the module suitable for applications requiring controlled current delivery.
High-Power Performance
The converter is designed for high-power operation up to 300W and uses high-current MOSFETs and low-resistance capacitors for stable power conversion.
With conversion efficiency of up to 97% and output ripple of approximately ≤50mV, it is suitable for demanding DC power applications.
Thermal Management
The module includes two large aluminum heatsinks to help dissipate heat generated during high-current operation. For continuous operation near the maximum rated power, additional forced-air cooling is recommended.
Key Features
- High-power 300W buck converter
- Maximum output current up to 20A
- 15A recommended continuous current
- Adjustable constant voltage (CV)
- Adjustable constant current (CC)
- 6V–40V DC input
- 1.2V–36V adjustable output
- Up to 97% conversion efficiency
- Output ripple ≤50mV
- High-current screw terminals
- Short-circuit protection with self-recovery
- Dual aluminum heatsinks
- LED status indicator
- Suitable for battery and LED applications
Technical Specifications
| Feature | Specification |
|---|---|
| Module Type | Non-Isolated Step-Down (Buck) |
| Input Voltage | 6V – 40V DC |
| Output Voltage | 1.2V – 36V DC Adjustable |
| Output Current | 0A – 20A Max |
| Recommended Continuous Current | 15A |
| Maximum Power | 300W |
| Efficiency | Up to 97% |
| Current Limiting | Yes, Adjustable CC |
| Output Ripple | ≤50mV |
| Dimensions | 60mm × 53mm × 30mm |
Working Principle
The module converts a higher DC input voltage into a lower adjustable DC output voltage using a non-isolated buck conversion circuit.
The CV control sets the desired output voltage, while the CC control limits the maximum output current. This combination allows the module to provide either regulated voltage or controlled-current operation depending on the application.
Typical Application Scenarios
Battery Charging
Suitable for controlled charging applications for compatible 12V, 24V, lithium, and lead-acid battery systems, when correctly configured for the battery chemistry and charging requirements.
High-Power LED Driver
The adjustable constant-current feature makes it suitable for driving high-power LED arrays.
Solar Power Systems
Can regulate variable DC voltage from solar panels to a lower controlled output voltage.
Vehicle Electronics
Useful for converting higher DC vehicle voltages, such as 24V systems to lower-voltage electronics.
Adjustable Power Supply
Can be used to build a high-current adjustable bench or laboratory power supply.
Applications
- Battery charging
- High-power LED driving
- Solar power regulation
- DC power conversion
- Vehicle electronics
- Adjustable bench supplies
- Motor and actuator power systems
- DIY power electronics
- Embedded power systems
- Industrial DC regulation
Package Includes
- 1 × 20A 300W DC-DC Step-down Buck Converter Module
Product Disclaimer
Product information provided on our website may not be entirely accurate as specifications can vary between manufacturers, suppliers, and production batches. Please verify the actual product specifications before using the module in critical applications.
Product images are for illustrative purposes only and may differ from the actual product in colour, component placement, heatsink size, terminal design, or other visual details.
Important Note
Active Cooling
For continuous operation at high current or near 300W, additional forced-air cooling such as a fan is strongly recommended to prevent overheating.
Input Polarity
The module does not provide reverse-polarity protection according to the supplied product information. Ensure that IN+ and IN- are connected correctly before applying power.
Step-Down Operation Only
This is a buck converter, so the output voltage must always be lower than the input voltage.
Current Rating
The maximum stated current is 20A, while 15A is recommended for continuous operation. Actual performance depends on input/output voltage, cooling, load conditions, and installation.
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Frequently Asked Questions
1. What is this module?
It is a high-power non-isolated DC-DC buck converter with adjustable constant voltage and constant current controls.
2. What is the input voltage range?
The input voltage range is 6V–40V DC.
3. What is the adjustable output voltage?
The output can be adjusted from approximately 1.2V to 36V DC.
4. What is the maximum output current?
The maximum stated output current is 20A, with 15A recommended for continuous operation.
5. What is the maximum power?
The module is rated for up to 300W.
6. Does it support constant-current operation?
Yes. It provides an adjustable CC current-limiting function.
7. Can it be used for battery charging?
Yes, it can be used for suitable battery-charging applications when the voltage and current are correctly configured for the specific battery.
8. Can it drive high-power LEDs?
Yes. Its constant-current adjustment makes it suitable for high-power LED applications.
9. Does it provide short-circuit protection?
Yes. The supplied specifications state self-recovering short-circuit protection.
10. Does it have reverse-polarity protection?
No. The supplied information states that the module does not have reverse-polarity protection.
11. Can the output voltage be higher than the input?
No. This is a step-down buck converter, so the output must remain lower than the input voltage.
12. Is a cooling fan required?
For continuous high-current or near-300W operation, additional active cooling is strongly recommended.
13. What is the conversion efficiency?
The specified maximum efficiency is up to 97%.
14. What is included in the package?
The package includes 1 × 20A 300W DC-DC Step-down Buck Converter Module.Only logged in customers who have purchased this product may leave a review.
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