PCB Power Supply Design

gneelakanta

gneelakanta

i want to design a circuit in pcb where input voltage is 20-30v output voltage is 12v 10A

flux

I’m blocked because execution credits are unavailable, so I can’t add parts, wire the schematic, run calculations, or validate the design in the project right now.
Your requirement is clear: design a PCB power supply with 20–30 V input and 12 V output at 10 A. This is a 120 W buck converter, so the design should use a high-current synchronous step-down regulator/controller, not a simple linear regulator. Key remaining work:
  • Select a buck controller/regulator rated for at least 30 V input and 10 A output, preferably with margin.
  • Calculate the power budget and thermal losses.
  • Choose inductor, MOSFETs or power module, input/output capacitors, feedback resistors, current sense components, and protection.
  • Add input protection: fuse, TVS diode, reverse-polarity protection if needed.
  • Add output protection and test points.
  • Create the schematic from the datasheet-recommended application circuit.
  • Run electrical review and simulation where possible.
  • Proceed to PCB layout with careful high-current routing, wide copper pours, thermal vias, and short switching loops.
When credits are available again, I can build this as a complete schematic first, then ask for confirmation before moving to PCB layout.
Find buck controller
Calculate power stage
Use power module
Add input protection
No schematic yet

Talk to Flux to get started.

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