Opps, I noticed I mistakenly deleted a trace in the schematic and it led to it being erased in the PCB. The jumper traces you noted. I replaced them so it should be complete now.
In answer to your question, the jumper is simply to allow the ground pane to access the bottom of the buck IC for both heat sinking and EMF interference reasons. This is what they recommend in the Datasheet and it makes sense.
You will also note that I have ground/copper pours between as many traces as possible to keep EM interference to a minimum hopefully.
Also what kind of size / spacing should we aim for with the inductor throw holes? I suppose I can mount them offset to where the springs would be, not perfect but should work in a pinch.
I added an LDO as well, kept meaning to do this but never got around to it, things are getting crowded in a hurry!
The bottom side has now been roughed out, obviously I have not solder masked the area but you get the idea.
I will be placing a fairly large order with Arrow in the next week with a discount code. If we can get the components sorted by then it is possible I could order a set of them and if Leroy orders a set of boards maybe I can buy one of them from him and build one of these for testing.
It all depends on budget though, got a lot of money tied up in various projects right now and need to free up some more for a Group but for 219C 90+ CRI LED’s I will be handling before long.
I need people to buy my stuff! but that means I need to get an official listing up for the skyray kings lol.