• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 33 subscribers
  • Views 318 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.

TPD2E2U06: ESD protection for IEC61000-4-4 Burst events?

AnBer
Mastermind 28880 points
Part Number: TPD2E2U06
Other Parts Discussed in Thread: TMUX1072, TS5A623157, , TPD1E05U06

Team,

The use case is the below:

On a PCB an I2C master communicates to an I2C slave over an analog MUX (like TMUX1072, TS5A623157). IEC61000-4-4 Burst events occur on the Master side I2C (before the MUX) and the communication is disturbed:

I2C master <------------> MUX  <------> I2C Slave
                                 |
                            ESD burst    


-Can TPD2E2U06 help to mitigate those type of problems?
-Where should it be placed?
-Do we have some design advises/guidelines (schematics, PCB layout) that can help to mitigate such issues?
-Any TI reference design that specifically tackle IEC61000-4-4 Burst events creating interface communication issues?

Thanks in advance,

A.

  • 0
    TI__Expert 5660 points

    Hello,

    As a starting point, please refer to the following E2E post regarding selecting a mux for I2C applications, along with an app note IEC 61000-4-x Tests for TI’s Protection Devices.

    TPD2E2U06 complies with IEC 61000-4-5 Surge protection – 5.5-A Peak pulse current (8/20 µs Pulse). Surge has a longer period and a higher power than EFT. Let me check with our team on the best protection device for IEC61000-4-4 Burst in I2C applications & I or one of our team members will update you tomorrow.

    Best regards,
    Kate

  • 0
    TI__Expert 8471 points

    Hello,

    I did not find anything in the datasheet to suggest that this part has been tested to protect against IEC-61000-4-4 burst events. This does not mean it won't necessarily protect it against those events, but it's not guaranteed. However, I did find another part that might fit your needs. TPD1E05U06 is recommended to protect I2C interfaces and will also protect against IEC-61000-4-4 burst events. 

    The part should be placed in parallel with the input and connected to ground as the diagram below shows. 

    As far as reference designs are concerned, I don't have any specifically related to IEC-61000-4-4. However I would recommend reading these documents to gain a better understanding of these types of issues and how to deal with them.

    System Level ESD Protection Guide

    ESD Packaging and Layout Guide

    Please let me know if this answers your questions.

    Regards,

    Matt Smith