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USB-PD sink not working with some Ac adapters

AWack
Associate III

‎2024-10-07 04:38 AM - last edited on ‎2024-10-07 06:36 AM by

Hi,

I´m using USB-PD (with STM32G0B1CEU6) succesfully with a lot of own boards and different AC adapters. But with one adapter I don´t get the 20V despite the source has this capability.

Using a PD analyzer I can see, that with the not working adapter the sink doesn´t send an ACK. What could be the reason?

 

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FBL
ST Employee

‎2024-10-07 06:34 AM

Hi @AWack 

Would you share your .cpd traces?

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