ptn5110 with nx20p3483uk

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ptn5110 with nx20p3483uk

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WeiWeiBo
Contributor II

Hi everyone :

I have a PD (power delivery) function on the imx8mp board.

chip use ptn5110 (cc-logical) with nx20p3483uk (pd-switch)

but now, summary as below, I got my wave-form like this

from partition schematic 'VBUS PD-in' is my typec PD plug-in side

it will rise to 20V; on the other hand, 'VCHG PD-out' is the output side 

that will be affected by EN_SNK from ptn5110, I have no idea why pull low EN_SNK

in my wave-form, does anyone suggest that I modify my BSP (driver code to issue EN_SNK low in tcpci.c), or does the hardware design needs to be modified.

 

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