This is a typical requirement for a wall power adapter to 5V supply. Implementing a switched mode power supply is as mentioned before more complicated than a linear supply - with a linear supply you can’t really go wrong.
Switching power supplies are very common as they offer high efficiency, and therefore do not typically require thermal management as a linear supply would. To understand and be able to design a voltage supply is a crucial skill for anyone interested in electronics, from a hobbyist/maker level to full time professional. The task is to design a standalone DC-DC buck converter PCB layout. Buck Converter PCB Power Supply Requirements You’ll also find all the components used in this design in my extensive open source Celestial Altium Designer Library. As this design has been completed by someone else, the schematic style is a little different from my usual projects. You can find the final PCB design for this project on my GitHub page it’s released under the open source MIT license. I thought it would be more interesting to hire a freshly graduated electronics engineer without much experience in power supply design and have him design a power supply with just the requirements listed in the student project ideas article. They seem trivial on the surface - add a few caps, IC, inductor and a few resistors right? The current loops on a switched-mode power supply and component selection, however, is non-trivial. I figured that since I’ve designed hundreds of switched-mode power supplies, me just running through design is probably not going to be perhaps as educational or informative as it could be on the pitfalls or issues associated with designing a power supply.
In this article, we’re going to look at the implementation of one of the power supplies in that project. I suggested working on projects that would help cement their skills as well as show their experience with design - I wrote an article with suggestions on getting started on projects and some project ideas. After my Reddit AMA with Altium, there were a lot of questions from students and graduates asking what they could do to improve their skills and show they are worth hiring.
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