TCAN4550: Recommended ESD rating

Charles Zhang1

Expert 3420 points

Part Number: TCAN4550

Hi Team,

My customer would like to put ESD device on CANH & CANL, is there any recommended rating for the ESD device?

If they use ESD device with 3.3V rating, will it be too low?

Regards,

over 4 years ago

+1 Eric Hackett over 4 years ago

TI__Guru 74252 points

Charles,

For the rating, do you mean the reverse breakdown? If so, 3.3V will be much too low. A typical recommendation we make for TVS diodes is the Nexperia PESD1CAN or PESD2CAN diode. For more information on how to properly pick a TVS diode, I'd recommend reading this document.

Regards,

Eric Hackett

0 Charles Zhang1 over 4 years ago in reply to Eric Hackett

TI__Expert 3420 points

Hi Eric,

Both these 2 recommended ESD devices have 24V-VRWM rating, which is the same as TCAN4550's Vsup's recommended maximum value, is there a correlation between ESD's VRWM and IC's Vsup? Thanks.

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TCAN4550: Recommended ESD rating