1.8V power surge on USB Plug

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tcubizolle
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1.8V power surge on USB Plug

Hello,

We have a power surge on the 1.8V provided by the DA14681 when we plug the USB. Measurements are in the files attached

After the surge, the 1.8V is stable.

 

The overshot may damage the components using the 1.8V.

There is a way to remove this overshot?

 

Regards,

Thomas

Attachment: 
Device: 
Device Number: 
DA14681
PM_Dialog
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Last seen: 5 months 1 week ago
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Joined: 2018-02-08 11:03
Hi tcubizolle,

Hi tcubizolle,

Thanks for your post online. Is this a custom board based on DA1681 SoC?

Thanks, PM_Dialog

tcubizolle
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Last seen: 4 months 1 week ago
Joined: 2020-08-17 15:12
Hello,

Hello,

This is a custom board.

We disabled the code by inserting a "while (1)" at in the beginning of "main()"

So we assume, the issue comes from our hardware.

Regards

PM_Dialog
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Last seen: 5 months 1 week ago
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Joined: 2018-02-08 11:03
Hi tcubizolle,

Hi tcubizolle,

Would it be possible to replicate this with any of the DA1468x DKs? I would also recommend checking your design if it is according to AN-B-061 Application Note: DA1468x Application Hardware Design Guidelines .

Thanks, PM_Dialog