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Better understanding of FrameWork 180W charger

A project log for PicoPD Pro - USB-C PD 3.1 PPS AVS with RP2040

Adding Power Delivery 3.1 (PD3.1) with PPS EPR AVS to our beloved RP2040 chip in Pico footprint.

centylabCentyLab 12/03/2024 at 06:140 Comments

The library and IC was able to request and draw 3.6A at 30V. We only have a 8Ohm load for this test.

Here is the step voltage test from 15V to 30V using AVS mode with 1V increment. AP33772S allows the finest step in AVS as 200mV.

There is also some delay needed between each AVS profile, 600ms works very well in our application. When switching  between AVS mode and fixed PDO mode, we need a longer delay like 1200ms to ensure the request doesn't get ignore or cause a "hard-reset" from the charger.

Here are the profiles supported by the charger


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