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DP83848I-POE-EK: DP83848N Overshoot

Intellectual 1140 points

Replies: 2

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Part Number: DP83848I-POE-EK

Hi Team,

My customer is using DP83848N (Not in Ti.com, while I am trying to reach out you through DP83848I-POE-EK) with PoE. when they plug the network cable, overshoots occur in IC's pins (TD-/TD+/RD-/RD+) as the figure shown below (10.6V volts). 

I want to make sure that it is risky or not? Because this overshoot exceed the limit in the datasheet . In addition, do you have some suggestions to lower down the overshoot?

The sch are also shown below.

Thanks a lot.

Best regards,

Yang

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