[Advice request] Major updates in my 30A Power Distribution Board. (This is my third iteration)

Hi everyone,

Here we go again!

This is my third iteration in this design. This board is supposed to handle 15 to 20A continuous and 40A max current.

here are the changes I made from last attempt:

  • Synchronous DC-DC buck converter 5V 5A (AP64502QSP‑13) and followed the recommended layout.
  • Resistors are now SMD 1206.
  • Small capacitors are now SMD 1206.
  • Power traces are replaced with copper pour.
  • The distance between the fuse and the connector is reduced by changing the position of the capacitor.

Any feedback is appreciated.
Thanks,

https://preview.redd.it/gb9qqn4l72ag1.png?width=971&format=png&auto=webp&s=6926335e3ae5e48554bce53351f32fa09b0e49e8

https://preview.redd.it/pfphye6942ag1.png?width=1395&format=png&auto=webp&s=f16e576764f8120870aa1ba826d0f3b33831ff01

https://preview.redd.it/zoa7ee2a42ag1.png?width=582&format=png&auto=webp&s=290a0955bcde14c5824862f53b1d4e4e7f460362

https://preview.redd.it/qijpfps442ag1.png?width=1043&format=png&auto=webp&s=da46277ce8d3d7acf5ff2df85a23cd6b655434ad

https://preview.redd.it/v3zsx0xv32ag1.png?width=979&format=png&auto=webp&s=ccfa8925f43a6ee92e3de573fe11335b47da7834

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https://preview.redd.it/a0vn9so142ag1.png?width=1395&format=png&auto=webp&s=b9d20e0f3205a168d837bbc9b6d148e5a5c0d5a9

Posted Dec 29, 2025, 3:12 AM UTC

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