View Projects

Board Type :		GerberFile :
Layer :		Dimensions :
PCB Qty :	5 40 200 500 1500 4500 7500 10 50 250 600 2000 5000 8000 15 75 300 700 2500 5500 20 100 350 800 3000 6000 25 125 400 900 3500 6500 30 150 450 1000 4000 7000	Different PCB Design
PCB Thickness :		PCB Color :
Surface Finish :		Castellated Hole :
Copper Weight :	1 oz	Production Time :
Total: US $
Elecrow community is a shared platform and we are not responsible for any design issues.

PCBA Qty:		BomFile:
NO. OF UNIQUE PARTS:		NO. of Components:
Assembly Cost: US $
Elecrow community is a shared platform and we are not responsible for any design issues.

3dPrintingFile :		Size :
Unit :		Volumn :
3D Printing Qty :		Material :
Total: US $12.99
Elecrow community is a shared platform and we are not responsible for any design issues.

Acrylic Type :		AcrylicFile :
Dimensions:		Engrave:
Acrylic Qty :	5 40 200 500 10 50 250 600 15 75 300 700 20 100 350 800 25 125 400 900 30 150 450 1000	Acrylic Thickness:
Acrylic Color:		Total: US $12.99
Elecrow community is a shared platform and we are not responsible for any design issues.

CentyLab LLC

Published: Aug 12,2024

PicoPD - USB PD development board

PicoPD allows access to all USB PD 3.0 profile include PPS so that you can get the most current at any voltage out of your new USB-C charger

Attribution-MIT License

Tools, APP Software Used etc.

Kicad

Story

Why can't we just utilize laying around USB-C wall plugs to prototype higher voltage devices? How about unlocking 5A at 5V on your PD3.1 charger?

PicoPD will help you negotiate the voltage from your USB PD wall plug/power bank while still retaining the full functionality of RP2040. It will be a good candidate to USB-C PD your motor control board, controllable power supply, LED driver, custom battery charger, and more!

Premade units: Elecrow - PicoPD

Demo

demo

Pinout

pinout

Key player

The key player that enables the PD ability is the AP33772 IC from Diodes Incorporated. This is a relatively new IC that has an integrated USB PD controller with PPS capability. Power selection and power rail status checks can be done over I2C. All of the PD negotiation, refresh, and timing are done by the AP33772 IC. The microcontroller after making its power request in Setup(), is free to perform another task. This also simplified the code in comparison to the good old FUS302B which requires the microcontroller to do the heavy lifting.

The typical circuit utilizes a back-to-back NMOS configuration to create a bidirectional power switch. The switch remains open until the PD power negotiation is complete. My design omitted the NMOS switch so that the RP2040 can be powered as soon as the USB-C is plugged in.

Schematic