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TVS3300: Flat clamp surge protector for 60V

Adam
Expert 1215 points
Part Number: TVS3300
Other Parts Discussed in Thread: MCT8329A, TVS1800

Tool/software:

Hello,

I need the device with flat clamp at 60V, something like TVS3300 but for 60V and about 30A.

I can have a margin of 58-62V.

Can you suggest simplest possible circuit (less component possible) to make that kind of circuit based on TI parts?

  • 0
    TI__Genius 17990 points

    Hi Adam,

    What is the nominal operating voltage of the line you're trying to protect? 

    Just to confirm I understand correctly, you need to clamp a transient to 58-62V to stay below the absolute max ratings of the protected IC downstream? 

    Regards,

    Sebastian

  • 0 in reply to Sebastian Muriel
    Expert 1215 points

    Nominal Voltage is 50V.

    Some components has 65V max absolute voltage like MCT8329A.

    So I have very small margin.

    I need to clamp at about 60V in ideal case.

    System is powered from LiPol Battery 50,2V so battery will clamp itself but I want to have protection.

  • 0 in reply to Adam
    TI__Genius 17990 points

    Hi Adam,

    The best solution we could offer is TVS3300 + TVS1800  in series to achieve a working voltage of 51V.

    Depending on the transients you want to protect from, this configuration should be able to achieve clamping below 65V.

    The clamping voltage would be the sum of the clamping voltage of the two TVS diodes in series. Based off the clamping voltages for the IEC 61000-4-5 8/20us max surge current specs, this would be 23.7 + 38V = 61.7V. 

    Regards,

    Sebastian 

  • 0 in reply to Sebastian Muriel
    Expert 1215 points

    Thanks,

    I didnt think I can connect them in series, thats a solution for me, thanks

  • 0 in reply to Adam
    TI__Genius 17990 points

    Hi Adam,

    Yes you can stack diodes to achieve the desired working voltage. Let me know if this solution ends up working in your design!

    Regards,

    Sebastian