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USB EZ-PD Type-C

falu_294486
New Contributor

Hi,

I used the Dock board, designed by CCG4 4236, and when I encountered charging, I CCG4 not send Source_Cap action on NB.

This image is designed for the circuit architecture

Dock Board.bmp

The following figure is the message caught using CC analyzer, pictured above for normal charging, the following figure is due to CCG4 did not send out Source_Cap after the stop.

Currently rechargeable case with a case that cannot be recharged,

The difference in CC Log cannot be sent out in Source_Cap.

The CASE,CC Log that can currently be recharged is as follows:

charge pass.jpg

The CASE,CC Log, which is currently not rechargeable, is as follows:

charge fail.jpg

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1 Solution
ShifangZ_26
Moderator
Moderator

Hi Faco,

If this is one board with difference NB case, you need to check the 5V power source. You can see the VBUS become 5.8V when CCG4 sent PS_RDY.

BTW, I have checked CCG4 dock firmware, we set 3.0V as Maximum voltage allowed when PS_RDY is received during a SNK to SRC PR_SWAP.

#define VSAFE_0V_PR_SWAP_SNK_SRC            (3000u)

/**< Maximum voltage allowed when PS_RDY is received during a SNK to SRC PR_SWAP. This is set to 3.0 V. */

Best Regards,

Lisa

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