Find files to check ADuM7441 reliability - test isolation.

The customer performs the ADuM7441 chip isolation test, and some chips fail (3 out of 100). Under what conditions are these tests carried out at the ADI plant to isolate the ADuM7441? Can I get confirmation files?

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ADIApproved
Jun 4, 2019 +1 verified
Hi: Could you please share more about how customer perform the isolation test? ADuM744x is proof tested according to UL1577. Before the test,pins on side 1 and side2 are tied together separately. Then…

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on Jun 4, 2019 3:20 AM
Hi:

Could you please share more about how customer perform the isolation test?

ADuM744x is proof tested according to UL1577. Before the test,pins on side 1 and side2 are tied together separately. Then 1200Vrms insulation voltage is applied across isolation barrier for 1 sec. leakage current is monitored and threshold is 5uA.

Regards

Chris
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0 Ivan_Kochergin on Jun 4, 2019 6:41 AM in reply to ADIApproved

Hi Chris.
Thank you very much for your answer.

The customer tested the ADuM7441 with an average insulation voltage of 1000 V for one minute. Could you give a link to UL1577?
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on Jun 4, 2019 6:52 AM in reply to Ivan_Kochergin
Hi:

please go to below link for UL1577 paper:

https://www.analog.com/en/about-adi/landing-pages/001/safety-and-regulatory-compliance-information.html

Could you please send me a mail via chris.qin@analog.com to discuss some details of this case?

Regards

Chris
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on Jun 4, 2019 7:08 AM in reply to Ivan_Kochergin
Hi:

please go to below link for UL1577 paper:

https://www.analog.com/en/about-adi/landing-pages/001/safety-and-regulatory-compliance-information.html

could you please send me a mail via chris.qin@analog.com to discuss some details?

Regards

Chris
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