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Part Number: ISO1050
Our customer use ISO1050 for hot plug application, here is the schematic, one DC-DC is used for 24V to 5V, and then convert CAN_5V by isolated module.
He need hot pulg the power line, CANH and CANL during his application, and he found that some ISO1050 are damaged and the power is pulled lower.
There is only one node with the CAN bus. Could you please help to analysis? (Note:PESD1CAN is 24V)
Thank you for your post and for including a schematic of the ISO1050 setup. Which power supply is pulled lower: Vcc1 or Vcc2? Are all of the damaged ISO1050 damaged in the same way or showing the same behavior?
Please let us know and the team will provide more detailed analysis during normal business hours on Monday.
Have a great weekend,
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In reply to Manuel Chavez:
Thank you for your reply, not all ISO1050 are damaged, the failure is about 5%. And I have confirmed with the customer that the ISO1050 could work normally without hot plug. But his application need hot plug during working. After damaged, the impedance of CAN_5V is low and it makes the isolation power is pulled lower.
Do you have any other suggestions？ Thank you very much.
In reply to Kailyn Chen:
Thanks for posting on E2E. I have some additional questions and thoughts:
In reply to Dan Kisling:
I haven't heard from you in a few days. Were you able to determine what was damaging the ISO1050?
I haven't heard from you in over a week so I'm going to close this thread for now. If you need further assistance please feel free to respond to this thread or open a new thread and I would be happy to assist you further.
Thank you very much. And the customer is changed solution and testing, so he didn't give me feedback about this question.
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