This is an adjustable voltage source DC-DC buck 12 A with low ripple which is useful for your projects.
This product is a step-down voltage source with medium power which can provide tensions between 1.25 V and 30 V, starting from 4.5 V voltage to 30 V.
It uses high quality capacitors and has a low output ripple, making it suitable for precision applications. With this circuit you can build your own lab controllable voltage source. All you need is a source of fixed voltage at 30 V DC maximum.
The only condition is to bear the amperage required. You can also include this module in any project of yours because it is very small and easy to mount.