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LAUNCHXL-CC1352P: Question on CC1352P Reference Design's ESD consideration

Yuanchen Zhu
Intellectual 425 points
Part Number: LAUNCHXL-CC1352P
Other Parts Discussed in Thread: CC1352P

Dear TI Expert,

  I have a confusion about ESD strategies on Launchpad CC1352P-2. In the schematics, it can be seen that in sheet No. 3 , debug interfaces are protected by TVS arrays (CR7 and CR8). While in sheet No.2, there does not seem to have any TVS protection device for BoosterPack headers. Why is that ? How do we consider our strategy on this? Just curious about it. Hope someone can point out. 

  I have a JTAG debug interface header on my board for CC1352P, and is considering the necessity that we need a TVS array to protect it.

Thanks.

Yuanchen Zhu

  • +1
    TI__Guru**** 317180 points

    As I understand it the idea is to protect the pins that are most used, typically the debug header (in number of insertions). If you want to spin your own board you should evaluate how the board is going to be used and which pins that are more likely to be exposed to an ESD event. For your use it could be that protection is needed on different pins.