CYPD3120 - OCP

Announcements

Live Webinar: USB-C adoption. Simple & Cost-efficient solutions | April 18th @9am or 5pm CEST. Register now !

Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

cross mob
Ivan_Lee
Level 5
Level 5
Distributor - Zenitron(GC)
100 replies posted 5 likes given 100 sign-ins

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?

0 Likes
1 Solution
RajathB_01
Moderator
Moderator
Moderator
250 replies posted 100 replies posted 50 replies posted

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

0 Likes
3 Replies
RajathB_01
Moderator
Moderator
Moderator
250 replies posted 100 replies posted 50 replies posted

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

0 Likes
Ivan_Lee
Level 5
Level 5
Distributor - Zenitron(GC)
100 replies posted 5 likes given 100 sign-ins

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...

0 Likes
RajathB_01
Moderator
Moderator
Moderator
250 replies posted 100 replies posted 50 replies posted

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

0 Likes