Designing a PCB in Fusion 360 - Regulated Power Supply

In this video I walk through my designs for my latest project which is a regulated power supply board that I designed in Fusion 360 and had made by JLCPCB.

#electronics #pcb #pcbbuild #jlcpcb #fusion360 #eagleeda #eda

[careyian]

Oh boy, this has a fun one! Super excited to see how this one turns out when I get it back from the manufacturer!!

[dascandy]

PCB layout wise, I'd be tempted to put the three connectors in a row.

I'm also surprised to see Vin and the two provided rails on the same connector? Wouldn't you put power in on one side and take the gnd/5v/3.3v on the other side?

I'd consider switching the pin headers for JST headers given the risk of reversing the connectors and reverse-powering your targets.

I don't understand why you picked a mosfet-and-transistor setup to conduct power? Is that to avoid arcing inside the switch? It looks like it debounces the input and it reduces current through the switch.

I think your 100u capacitor doesn't match the footprints I tend to see for them; usually they're the electrolytic can versions and your footprint seems to match a ceramic capacitor.

For circuit design I always use Kicad; similar to what you can do in Eagle/Fusion except free, and it has separated circuit design, component footprint selection and PCB layout subprograms. It has a couple tens thousand components by default, which covers nearly all things you'd want to typically use. It has the usual components under their short names - so if you search for R, C or L you get a resistor, capacitor or inductor, but if you prefer the American style symbols you can select R_american and it'll give you the squiggly line resistor and American style capacitor drawings.

Those regulators really like it if you put a capacitor on their output. Something like a 10uF and a 100nF combined usually. Not for ripple filtering, but to catch variations in your load.