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ISO7760: Lifetime

Brian Wang0928
Genius 14030 points
Part Number: ISO7760
Other Parts Discussed in Thread: ISO7841

Tool/software:

We found that the lifetime year is changed from 100y to 30y. Could you help to explain why?

and also, is there VIMP>9.6KV isolator available?

application: Solar Inverter

Regards

Brian

  • +1
    TI__Genius 17345 points

    Hi Brian,

    Thanks for reaching out. 

    The old standard IEC 60884-11 lifetime margin was 87.5% which resulted in >100yrs lifetime measurement.

    The new standard  IEC 60747-17 redefined the lifetime margin to 50%. This is why we have updated our lifetime and plots to match the new standard.

    Regards,
    Aaditya Vittal

  • 0 in reply to Aaditya V.
    TI__Genius 14030 points

    Very Thanks.

    One more question about the max. impulse voltage. Is there VIMP > 9.6KV isolator available?

    Application: 3ph Solar Inverter

    Regards

    Brian

  • 0 in reply to Brian Wang0928
    TI__Genius 17345 points

    Hi Brian,

    TI does not currently offer 6 channel digital isolators with VIMP>9.6kV.

    However, TI does offer the ISO78xx family of isolators which supports a VIMP of 9.8kV. Please see the insulation specifications below for the ISO7841:

    Regards,
    Aaditya V