DC to DC buck converters is a famous topology in the electronic and a widely used circuit in electronic devices. A buck converter steps down the input voltage while it increases the output current. In this article/video, I have discussed a DC to DC buck converter that can be used effectively as a switching power supply. The output voltage and current are adjustable: 1.25V to 30V and 10mA to 6A (continuous). The power supply supports the constant voltage (CV) and constant current (CC) features. Two LEDs demonstrate the CV and CC status. The circuit is compact and both sides of the PCB have been used to mount the components.

Please consider that I have not included the L1 and the heatsink in the bill of materials for the assembly. Make sure that your selected/built inductor (ferrite core) can tolerate at least 10A (47uH). The hole diameter of the inductor’s pads is 1.3mm.

More details please check:

https://www.pcbway.com/blog/technology/0_30V__0_7A_Adjustable_Switching_Power_Supply.html