ISO7760: Lifetime

Brian Wang0928

Genius 15110 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

over 1 year ago

+1 Aaditya V. over 1 year ago

TI__Mastermind 21465 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 Brian Wang0928 over 1 year ago in reply to Aaditya V.

TI__Genius 15110 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 Aaditya V. over 1 year ago in reply to Brian Wang0928

TI__Mastermind 21465 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

Isolation

Isolation forum

ISO7760: Lifetime