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Can the STUSB47xx renegotiate a power contract under processor control?

AHare
Associate

I'd like to build a multi-port USB-C charger that allocates higher wattage to recently-plugged-in-devices. (Say a 30W charger that will provide 9V@2A for the first device, but then scale back to 5V@3A for each if two devices are plugged in)

To do this, I'd like to control the power offerings from a processor. Is there a way I can force a connected 47xx to redo power renegotiation with new PDOs ?

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