Design recommendations to reduce susceptibility to ESD

RE: Design recommendations to reduce susceptibility to ESD

Michal — Thu, 17 Oct 2024 10:35:02 GMT

That's great, thank you for the update Ivan!

Best regards,

Michal

RE: Design recommendations to reduce susceptibility to ESD

Ivan Tving — Wed, 16 Oct 2024 14:28:25 GMT

Hi Michal.

Just saw that I owe you an answer here :-). We moved on and passed all relevant EMC/ESD tests as the BLE turned out not to be the cause of the problem we experienced. Thank you for your support. You are welcome to close the case.

Best regards, Ivan

RE: Design recommendations to reduce susceptibility to ESD

Michal — Wed, 20 Dec 2023 16:37:53 GMT

I have looked for any specific information, but did not find any and didn't get any more info from my colleagues either unfortunately.

Please let me know about any progress with the testing after the new years.

Best regards,

Michal

RE: Design recommendations to reduce susceptibility to ESD

Ivan Tving — Fri, 15 Dec 2023 08:37:26 GMT

Thanks Michal,

For now we just want to check for Nordic recommendations and perhaps known issues. The seasonal vacation is coming up, but first thing next years I'll start a more structured testing of the issue, so I can provide more details.

Best regards, Ivan

RE: Design recommendations to reduce susceptibility to ESD

Michal — Thu, 14 Dec 2023 16:25:15 GMT

Thank you Ivan.

I am asking my more experienced colleagues to provide some input as well and I will get back to you.

Best regards,

Michal

RE: Design recommendations to reduce susceptibility to ESD

Ivan Tving — Wed, 13 Dec 2023 11:35:08 GMT

Hi Michal,

Thanks for your support. Yes, we have a ST USBLC6-2 very low capacitance ESD protection SOT23-6L sitting right below the USB connector:

It is sitting on the opposite side of the connector with very short leads to the connector terminals.

Br, Ivan

RE: Design recommendations to reduce susceptibility to ESD

Michal — Tue, 12 Dec 2023 17:58:42 GMT

Hello Ivan,

Do you have any ESD protection circuitry on the micro-USB connector?

Best regards,

Michal