The 20A 300W High Power Step-Down Buck Module is a robust, high-current DC-DC voltage converter designed for demanding applications requiring efficient power conversion from a higher input voltage to a lower, adjustable output. With a maximum output current of 20A and a power rating of 300W, this module is capable of driving high-power LED arrays, industrial equipment, motors, and other heavy loads that exceed the capacity of standard buck converters.
The module accepts a wide input voltage range of 6V to 40V DC, making it compatible with 12V, 24V, and 36V power systems, as well as battery banks and industrial power supplies. The output voltage is adjustable from 1.2V to 35V DC via the onboard multi-turn potentiometer, allowing precise configuration for your specific load requirements.
At the heart of the module is a high-efficiency synchronous buck converter that operates at a fixed switching frequency of 150 kHz. The conversion efficiency reaches up to 94%, minimizing power loss and heat generation — critical for high-power applications where thermal management is a concern. The module includes a large heatsink and thermal pads to dissipate heat during sustained high-current operation.
The module features built-in protection circuits including over-current protection, over-temperature protection, short-circuit protection, and reverse polarity protection, ensuring safe and reliable operation even under fault conditions. The screw terminals provide secure connections for high-current input and output wiring, and the compact PCB design with mounting holes allows easy integration into custom enclosures, control panels, and equipment racks.
The 20A 300W Buck Module is widely used in high-power LED drivers, industrial control systems, battery charging, solar power applications, automotive electronics, and DIY power supply projects. Its high current capacity and wide input range make it an essential component for any application requiring substantial power conversion.
Whether you are building a high-power LED driver, powering industrial equipment, or designing a custom power supply, the 20A 300W Buck Module provides a reliable, efficient foundation. It is suitable for individual engineers, system integrators, and businesses purchasing in bulk for industrial deployments.
Features
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High output current — Up to 20A continuous output
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High power rating — 300W maximum output power
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Wide input voltage range — 6V to 40V DC input
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Adjustable output voltage — 1.2V to 35V DC via onboard potentiometer
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High conversion efficiency — Up to 94%
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Fixed 150 kHz switching frequency — Compact design with smaller components
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Built-in protection — Over-current, over-temperature, short-circuit, and reverse polarity protection
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Large heatsink included — For effective thermal management during high-power operation
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Screw terminals — Secure connections for high-current wiring
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Compact PCB with mounting holes — Easy integration into enclosures and panels
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Input Voltage | 6V – 40V DC |
| 2 | Output Voltage | 1.2V – 35V DC (adjustable) |
| 3 | Maximum Output Current | 20A |
| 4 | Maximum Output Power | 300W |
| 5 | Conversion Efficiency | Up to 94% |
| 6 | Switching Frequency | 150 kHz |
| 7 | Protection | Over-current, over-temperature, short-circuit, reverse polarity |
| 8 | Cooling | Large heatsink with thermal pads |
