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TIDA-010009: 2kV Surge on J1

MarcB
Genius 11160 points
Part Number: TIDA-010009

My customer has the following question:

The series resistor Rth to withstand a surge up to 2kV (according to data sheet in connection with a TVS):
Am I right in assuming that in schematics TIDA-010009_IO-Power + Protection_BIDIRE2 resistors R3, R73 and R74 would pass a 2kV surge?
At 500V per resistor, you just get to the 100W from the Vishay datasheet.

Can you confirm J1 can withstand 2kV Surge line-line ?

Thank you!TIDA-010008_IO-Power+ProtectionE2(001)_Sch.PDF

  • 0
    TI__Expert 5120 points

    Marc, your question has been forwarded to our Industrial Motor Drives team in Freising, Germany.  They will provide you with a response within the next 1-2 business days (August 19th). 

    Best Regards,

    John Fullilove

    Reference Design Operations

    Texas Instruments

  • 0 in reply to JohnFullilove
    TI__Guru** 123748 points

    Hello Marc, 

    These are special type of resistors that withstand 1.2/50us pulse.

    It also depends on the surge impedance.

    With surge impedance of 42R, J1 can be tested up to 2 KV.

    The design assumes testing as per standards. If the application is expecting higher transients or continuous transients, the resistors may need to be de-rated further.

    Thanks

    Sreenivasa