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.

ISO6741-Q1: Layout related issues

Part Number: ISO6741-Q1
Other Parts Discussed in Thread: ISO6741

Tool/software:

Hi team,

We have a few questions about the PCB layout guidance of ISO6741:
1. Why is the layer spacing required to be this value? What is the impact on high-frequency signals? Will the same spacing be applicable to other TI isolation chips?

2. Is it allowed to drill holes and lay copper under the isolation chip? There is a sentence in the data sheet, but the reason is not explained in detail. Is it okay if only holes are drilled?

3. What level of EMC test has this ISO6741 chip passed? Can you show us the test report?

BR,

Ethan

  • Hi Ethan,

    Thanks for reaching out.

    Please give me an additional day to review and respond.

    Regards,
    Aaditya V

  • Hi Aaditya

    Thanks, hope you receive your feedbacks soon.

    BR,

    Ethan

  • Hi Ethan,

    1. Why is the layer spacing required to be this value? What is the impact on high-frequency signals? Will the same spacing be applicable to other TI isolation chips?

    This spacing is recommended in order to provide a level of protection against EMI. Yes, the same spacing a guidelines are applicable to other isolator devices as well.

    2. Is it allowed to drill holes and lay copper under the isolation chip? There is a sentence in the data sheet, but the reason is not explained in detail. Is it okay if only holes are drilled?

    I will have to check about this as well. Is there a particular reason that the customer would like to drill through the PCB underneath the isolator?

    3. What level of EMC test has this ISO6741 chip passed? Can you show us the test report?

    For these results, please reach out to us over email. 

    Regards,
    Aaditya V

  • Hi Ethan,

    Thanks for emailing me. 

    I will be responding to it shortly with answers to your questions. We can continue our conversation through email.

    Regards,
    Aaditya