First pass at laying out the PCB: Appreciate some destructive criticism

[Piotr]

@jmk

A post with a Kicad schematic and/or PCB with a “what do you think of this?” should pass scrutiny.

I generally think that clear electronic discussions can be closed as there are probably better places for them. But PCB related discussions, even not strictly based on KiCad, in my opinion should have place at forum as learning to use KiCad is directly connected with learning to design PCB.
During last 2 days I was wondering if my discussion about DCDC converter design started with ‘Are you sure’ in this post:

DC to DC converter

I would do one GND zone for top layer and not 3 separate zones. Probably with some restricted area around SW net to limit capacitance from that net to GND. I think that when it will be filled a thin but short copper connection from IC pin 2 to input capacitors will be added. It will short the current loop in both DCDC phases. Even it can have higher resistance than going through your vias and through bootom GND to the vias to input capacitors it will have lover inductance so the higher harmoni…

fits into the forum topic.
The discussion of which way AC signals in DCDC flow is strictly related to how PCB should be designed - which connections are critical and which less critical. And even it is not related to KiCad I think it is helpful to users learning KiCad. I am still learning KiCad and that discussion gave me some new knowledge - I will look little differently at routing DCDC converters.