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ESD2CANFD24-Q1: Calculating the power dissipation for IEC 6100 -4

Darshan M V
Prodigy 30 points

Part Number: ESD2CANFD24-Q1
Other Parts Discussed in Thread: STRIKE, ESD2CAN24-Q1

Hello team ,

I am trying to replace the part from nexperia PESD2CANFD with ESD2CANFD , all the features Vcl ,Vbr Vrw ,Ir and dimensions looks perfect ,only concern I have is Power dissipation .in the datasheet it is mentioned 133W but for the exixsting nexperia part it is 200W.

My question is 

1.during the ESD pulse strike 8/20us from the generator in the CAN line 8kV or 15kV ,do we need to bother about power dissipation ? since the part already been qualified for CAN line and it is complaint with the standard

2.If yes to the above question , how do we calaculate and average the PD for ESD diode for 8/20us pulse

3.Please give me the calculation I have to consider ( ex- Ipp ) for 330ohm , 330pF generator specifications for calculation

 

  • 0
    TI__Expert 3420 points

    Hi Darshan, 

    From the datasheet that I found of PESD2CANFD, I don't see this device rated to 200W. I do see that IPP is better in our device than in the competitor device. Can you please share the datasheet you are looking at? 

    Normally, if someone is looking for a can part rated at 200W, they select ESD2CAN24-Q1. Better Ppp but worse capacitance. 

    Now, the IPP and PPP values that you mentioned are related to IEC 61000-4-5 Lightning/Surge Immunity. IEC 61000-4-2 covers system level ESD immunity. This app note provides a good explanation of both different Tests Link.

    Best,

  • 0 in reply to Bryan Rodriguez de San Miguel
    Prodigy 30 points

    Hello Bryan, 

    I am bit confused now about the parameters consideration ,Lets consider the  IEC 61000-4-2 standard attached below 

    1.for 8kv and 15kV what is IPP i have to consider with the clamping voltage of 37V with 330pF and 330ohm specs for Peak power calculation 

    2 . How to calculate PP during the transient ?

  • 0 in reply to Darshan M V
    TI__Expert 3420 points

    Hey Darshan!

    Please read this FAQ about this. Apologies for not understanding this question sooner. 

    From this graph:

    8kV IEC would be 16A TLP which around 36V (VClamp).

    Let me know if you need anything else.

    Best,

    Bryan