[Review Request] Step down buck shield for Wemos D1 V2
Hello ! Following post of V1
Description :
This is my third request here ! First time designing a board around a step down IC AP63301 and using fill zones.
My PCB IS a shield to host a Wemos D1 that will control a led strip of 60 ws2812 or more (max 180)
It has a step down converter to receive between 5V and 32V and downsize that to 4.25V for led strip and Wemos. Current consumption should be less than 3A
I took advice to remove some error in the first design :
- Fix the shorted R2 resistor
- Link EN pin to VIN for more stability
- Change side of the feedback link for shorter path
- Place the output capacitor closer to output
- Remove unnecessary via on the VIN pour
- Reduce unnecessary copper pour
- Added text to identify version of PCB
- Better silkscreen placement
- Make component placement closer
Hope this design is closer to a working PCB !
Thank you for the feedback !
Posted Nov 14, 2025, 7:03 PM UTC