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TPS51518: TPS51518 PGOOD noise when Vout startup

Intellectual 890 points

Replies: 3

Views: 65

Part Number: TPS51518

Hi Team,

I meet a urgent problem about PGOOD noise impact when start up.

I tried to change the pull high resistor from 4.7k , 10k ...100k ohm, the issue still exist. this phenomenon happened on five projects.

I also to check layout & schematic again, i didn't found any abnormal on this. 

Pls see below waveform, Could you help to know what does cause by?

Just let me know if you need board file & schematic, I can share with you..

Best Regards,

Mark

  • Hi Mark, 

    Can you provide schematic and board file ?

    You can send the files to my email. 

    Thanks

    Qian

  • In reply to Qian Chen:

    Thanks Qian,

    I already send them to you, pls help to check it.

    Thanks.

    Mark

  • In reply to Mark Chen52:

    This issue is supported offline. 

    I will close the post here. 

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