3.3v-3a-step-down-converter-powered-by-usb-c Schematic SVG view

Imported from GitHub: maudeve-it/3.3V-3A-step-down-converter-powered-by-USB-C · commit 8638856 · license MIT

Description

Without using a USB-C PD controller chip, handling communication over the USB cable, USB-C standard allows to get 5V up to 3A through a hardware availability detection. Here I show a design developed on KiCad and made through JLCPCB, powering from a USB-PD source and providing 5V and 3.3 (through a step-down converter) up to 3A.

publicMIT

3.3v-3a-step-down-converter-powered-by-usb-c

@maudeve-it

Without using a USB-C PD controller chip, handling communication over the USB cable, USB-C standard allows to get 5V up to 3A through a hardware availability detection. Here I show a design developed on KiCad and made through JLCPCB, powering from a USB-PD source and providing 5V and 3.3 (through a step-down converter) up to 3A.

Tags

jlcpcbkicadkicad-pcbkicad-schematicsusb-ccapacitorresistortransistorinductorconnectorledICdiode

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Project info

Files3

Source99 KB

Extracted521 KB

Source formatKiCad KiCad project format 2

GitHub stars4

Imported fromGitHub

Saves0

Downloads3

UpdatedJun 26, 2026

Downloads

Source packageOriginal hardware design source archive

Original KiCad project zip

99 KB

Fabrication packageManufacturing outputs for the board house

Gerbers and drill zip

109 KB

Review packageSchematics, PCB views, BOM, and extracted files

Schematic PDF

120 KB

Schematic SVG

954 KB

PCB SVG

417 KB

BOM CSV

3.0 KB