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ISO7760: application when ISO7760 instead of photocoupler +DIPIPM.

user5165315
Prodigy 30 points
Part Number: ISO7760

It is found that the noise is more large when ISO7760 instead of photocoupler +DIPIPM.
There is no any component between ISSO7760 and DIPIPM

Is there has any suggestion to avoid this problem?

  • 0
    TI__Guru 52980 points

    Hi,

    Could you please share more details about the noise problem that you are facing?
    Photocoupler input signal thresholds and requirements are very different from the digital CMOS logic states hence it is possible that a given circuit could operate these two devices differently. A good design using digital isolators provides good noise immunity and the high isolation specs of ISO77xx devices make a system even more immune to fast voltage transients.

    Please do share more details about the issue you are facing so that we can help you better. Schematic, PCB layout and waveform should also help. Thanks.


    Regards,
    Koteshwar Rao

  • 0 in reply to Koteshwar Rao
    TI__Guru 52980 points
    Hi,

    Please do share more information regarding the issue you are facing so that we can help you address the issue. Thank you.


    Regards,
    Koteshwar Rao
  • 0 in reply to Koteshwar Rao
    TI__Guru 52980 points
    Hi,

    I hope your were able to resolve any noise issues you were facing and are able to use ISO7760 in your application. I will go ahead close this E2E thread. If you have more questions, please do create a new post for the same. Thank you.


    Regards,
    Koteshwar Rao