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USB EZ-PD Type-C

Ivan_Lee
Contributor

We use SDK to develop us product and it is power sink role :

1. how can I read the input current

2. how to fast OCP via comparator in CCG3?

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RajathB_01
Moderator
Moderator

Hello,

With firmware and hardware changes according to that blog, it can be done. you need to use the SDK code for 3125/3135 as a starting point and port it to 3120, and use consumer path FETs to cut off when OCP detected.

Regards,

Rajath

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RajathB_01
Moderator
Moderator

Hello,

CCG3 does not support current measurement as a sink.

It is the PD source which implements Over-Current Protection and thus current measurement.

Regards,

Rajath

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Ivan_Lee
Contributor

Not PD source, PD sink role which implement OCP .

Is this possible in the device?

https://community.cypress.com/community/product-forums/usb/ez-pd-type-c-usb/blog/2018/06/21/how-to-i...

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RajathB_01
Moderator
Moderator

Hello,

With firmware and hardware changes according to that blog, it can be done. you need to use the SDK code for 3125/3135 as a starting point and port it to 3120, and use consumer path FETs to cut off when OCP detected.

Regards,

Rajath

View solution in original post

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