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USB EZ-PD Type-C

GrCa_1363456
Contributor II

Is a diode required for feeding the VDDD pin from a 5V LDO? There are a few configurations shown in the documentation. The ones where VDDD is externally sourced appear to have Diodes. The CYPD3171 dev kit has a 30V 5A diode. I am hoping that is overkill or, is there something structural in the part that can back feed the VBUS to the VDDD pin? I can’t imagine I would ever need a 5A (Huge package size) diode to feed VDDD so I am looking for some confirmation here.

Greg

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1 Solution
ShifangZ_26
Moderator
Moderator

The CCG3PA current consumption specification is about 10mA @5V .  There is not mandatory of selecting the diode's forward current with 5A. 

 

Best Regards,

Lisa

View solution in original post

1 Reply
ShifangZ_26
Moderator
Moderator

The CCG3PA current consumption specification is about 10mA @5V .  There is not mandatory of selecting the diode's forward current with 5A. 

 

Best Regards,

Lisa

View solution in original post