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TVS2200: How should customer design the experiment to prove the protection is working

Max Guan
Intellectual 1350 points
Part Number: TVS2200

Hi team,

As TVS2200 is a recommended solution to work with TI PD controller especially in PC market, customer would like to know how should they design the experiment to verify TVS device is working? Is there a typical test standard to follow? Or maybe only make a contact with system with a high-voltage wire connect to DC source (how to design the voltage is this case)?

And by the way, if we want to create a comparison test between TVS2200 and other TVS devices (or maybe competitor ESD, etc., with surge clamp module integrated), would you please suggest a suitable test for that?

Thanks for your help.

Max

  • 0
    TI__Genius 9896 points

    Hi Max,

    It depends on what parameters the customer is wanting to test out.  However, since this is mainly a surge protection device, one of the biggest parameters is going to be the IEC 61000-4-5 rating. To test these IEC ratings, refer to this guide. It will tell you about the ratings, and how to set up a test environment for each one. You will also be able to measure the peak pulse current (Ipp) and clamping voltage (Vcl) of the device. 

    Please let me know if this is sufficient or if you need more information.

    Regards,

    Matt Smith 

  • 0 in reply to Matt Smith
    TI__Intellectual 1350 points

    Hi Matt,

    Thank you very much for your answer. It is really helpful.

    I have some follow-up questions after checking the guide. 

    1. Seems to me IEC610004-5 is marked as a "lightning" case, and it mentions a telecom application. In this case shall I understand as it is the standard for products used in a AC power side (such as a power adapter?) or if could also be adopted in DC voltage side (for my case the 20V input to the laptop)?

    2. I notice some key parameter, Vcl is easy to understand, Ipp should be defined by customer correct? While could you guide me/customer on how should they select CWG type, and CDN type? (maybe any key factors to consider, any formulas, etc. )

    Sorry to bother but it's my first time touching the standard...

    Thanks for your help.

    Max

  • 0 in reply to Max Guan
    TI__Genius 9896 points

    Hi Max,

    1. It can be applied in both AC and DC applications. However, for an AC application, where the voltage is going both positive and negative, you would need to use a bidirectional device. You can read more about this here.
    2.  Yes that is correct. The customer should know how much current they are expecting the device to withstand during a surge event. While I don't know exactly what types of CWGs and CDNs were used to measure this part, I would be willing to bet that a 1.2/50 us CWG and a CDN similar to Figure 11 on page 9 were used since the device was rated for an 8/20 us pulse with 1 kV and 42 Ohms Req.

    Please let me know if you need any clarification. 

    Regards,

    Matt Smith

  • 0 in reply to Matt Smith
    TI__Intellectual 1350 points

    Hi Matthew,

    Thank you for your answer.

    I more question is is there any common-sense level selection on 40A Ipp and 100A Ipp? For example on personal electronics and industrial, automative?

    Customer is asking for some advise due to the concerning on selection on a Vclamp <28V TVS while mostly 100A will lead to larger Vclamp. What do you think?

    And if 100A is finally adopted, is there any device we could promote? seems TVS2200 only clamps 27.7V max on 40A.

    Thanks

    Max

  • 0 in reply to Max Guan
    TI__Genius 9896 points

    Hi Max,

    I'm a little confused on your question. Are you asking about 100 A with a 1 kV 8/20 us pulse (class 2), or another class entirely?

    Regards,

    Matt Smith