• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 15 subscribers
  • Views 272 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ISO1540-Q1: Can the Gnd on one of the isolated sides be above zero potential.

Abhijeet Abhijeet
Prodigy 30 points
Part Number: ISO1540-Q1

Hey there,

I am trying to isolate a circuit's I2C signals.

This circuit has a Gnd which is raised above 0V. The VCC is at 67V and the Gnd is raised to 62V.

will that pose a problem?

asking this cause I cant simulate the IC as only IBIS model is available.

regards

Abhijeet

  • 0
    TI__Mastermind 49345 points

    Hi Abhijeet,

    Welcome to TI and thank you for reaching out to us with your question.

    Yes, the potential difference between GND1 and GND2 can be upto 566Vpk. Hence, 67V is not a problem provided all the other pins like VCC and SDA/SCL follow their recommended operating voltages with their respective GND. 67V at VCC when GND is 62V is valid input. Thanks.

    Regards,
    Koteshwar Rao