12A Adjustable DC-DC Step-Down Buck Converter Module - 200W High-Power Supply Board
This DC-DC step-down converter module is a fully modular buck power supply that converts a wide DC input of 4.5-30V down to a precisely adjustable DC output between 1.25V and 30V. Rated for up to 12A of continuous current and 200W of output power, it is built for demanding high-current applications including LED lighting arrays, motor control circuits, battery charging systems, and automotive or solar power conversion setups.
The module uses a high-efficiency switching design that reaches up to 95% conversion efficiency, reducing heat generation and energy loss even under sustained load. A large toroidal inductor, aluminum heatsinks on both sides of the board, and heavy-duty screw terminal connectors support stable performance and simple, tool-free wiring. An onboard adjustable potentiometer allows the output voltage to be fine-tuned to the exact level required, while a built-in LED indicator gives a quick visual confirmation that output power is active.
Compact and fully assembled, this buck converter module is a practical adjustable power supply for prototyping, repairs, and embedded power conversion projects.
Package Contents
1 x DC-DC Step-Down Buck Converter Module (no additional accessories included)














