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TPS2511-Q1: TPS2511-Q1 ESD rating

Dexter Choi
Expert 2795 points
Part Number: TPS2511-Q1
Other Parts Discussed in Thread: TPS2511, STRIKE

Dear Sir,

my customer had tested 5KV ESD contact for DP(6pin),DM(7pin) lines of USB connector.

all of 5/5 tested samples are died. but pins 6 and 7 are 7.5KV rating.

could you explain detail for this issue?

  • 0
    TI__Expert 8420 points

    Hi,

    I want to know the test setup of the 5KV ESD test ,  is that using the IEC61000-4-2 or HBM ? 

    To be care, this two standard is big different and the test method is not same. The TPS2511-Q1 only support HBM level 7.5KV but not IEC61000-4-2.

  • 0 in reply to Michael Tan
    Expert 2795 points

    Dear Michael.

    Thank you for your prompt reply.

    My customer is using ESD Gun of ONYX 30.

    onyx-30-kv-esd-gun.pdf

    1. How to setup for test HBM. could you let me know test method?

    2. What are different between IEC61000-4-2 or HBM? could you explain that?

  • 0 in reply to Dexter Choi
    TI__Expert 8420 points

    Hi ,

    There are several differences between the HBM and IEC 61000-4-2 standard that are immediately obvious. If you use the IEC standard to test the TPS2511, it will be failed even though you say the test voltage is 5KV , In the same 5KV , IEC may create 10A to the TPS2511 compare to HBM only create about 3A  energy. I have not experience with the ESD gun set up for IEC or HBM, you can consult your supplier of the ESD gun . 

    Beside the ESD gun setup, in your test board you soldering a long cable to test, this long cable will created the equivalent inductance to the TPS2511-Q1. I suggest you test the USB port directly or using a shorter and stronger wire for this test. 

    The most important differences are as follows:

    • the amount of current and I2 R power released during a voltage strike

    • the rise time of the voltage strike

    • the number of voltage strikes repeated in the tests

  • 0 in reply to Michael Tan
    TI__Expert 8420 points

    Hi,

    I attached the link which I search in the internal , I think this material will help you to understand the different between the HBM and IEC

    Human-Body-Model-vs-IEC-61000-4-2.pdf