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PCB Review: 12V input to 10V & 5V onboard
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I'm working on a Raspberry Pi Hat that needs 12V, 10V, & 5V power onboard.

Here's a screenshot of the power regulation section of the PCB & schematic

This is my first time designing a buck converter circuit, so I very well could have done something dumb here. For clarity, the 5V output to the rest of the board is coming off the top of pad 1 on the 37 uH inductor. I just zoomed in as far as I could to get extra detail in the picture & it clipped that off.

My main questions:

1) Will it work? Obviously the biggest question!

2) Is having the 12V supply coming to the 10V linear regulator through the electrolytic cap fine? Do I need the 10 uF cap still?

3) How important is the location of the intersection of the 5V output from the buck converter? (In the schematic, the spot I'm talking about is where the inductor, capacitor, & feedback pin all intersect).

Thanks!! This is my first post here & I'm on old Reddit, so if there's any formatting or required posting info I missed, I apologize.

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3 years ago