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Zhen Li

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Why Is TLP Analysis Important if it Doesn’t Guarantee Compliance to ESD Standards?

Posted by Zhen Li on 07 July 2021

Over the past nine years since I have been with Semtech, Transmission Line Pulse (TLP) basics have always been one of the most important training topics for our new hires and customers. We have received many questions on why we emphasize and extensively rely on TLP analysis to provide the best solution to our customers. TLP testing doesn’t deliver the exact same waveforms as specified by industry standards like IEC 61000-4-2 or ESDA/JEDEC JS-001. It doesn’t guarantee that the IC or the system will pass testing for immunity to required electrostatic discharge (ESD) test levels. It is always recommended to verify all the results with the ESD generator after the TLP test is completed. So, why don’t we just simply test everything with our ESD generator, which is more familiar to most engineers and universally accepted? To answer that, I think it’s important to understand that TLP is not a replacement or an upgrade to the IEC tests, but it is complimentary to the ESD gun tests as an analysis tool. ESD gun test tells us YES or NO, but TLP can help us to understand WHY and HOW.

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Tags: Circuit Protection

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