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Hasan06
Associate
April 7, 2025
Solved

STGIB10CH60TS-L Isolation Issue

  • April 7, 2025
  • 2 replies
  • 1025 views

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Hello, would it cause any issues if 'PWR_GND' (highlighted in green) and 'SGN_GND' (highlighted in pink) are not referenced to the same ground?

Thank you in advance. Best regards.

Best answer by Peter BENSCH

Welcome @Hasan06, to the community!

yes, 'PWR_GND' and 'SGN_GND' must be galvanically connected to the same GND. But of course, these two GNDs must be separated from each other as much as possible in terms of high frequency by a suitable layout so that no ground bouncing occurs on the input side due to the large ripple currents on the power side. For an example of how something like this can be done, you can take a look at the GERBER layout of the STEVAL-IPM10B.

Hope that helps?

Regards
/Peter

2 replies

Peter BENSCH
Peter BENSCHAnswer
Technical Moderator
April 7, 2025

Welcome @Hasan06, to the community!

yes, 'PWR_GND' and 'SGN_GND' must be galvanically connected to the same GND. But of course, these two GNDs must be separated from each other as much as possible in terms of high frequency by a suitable layout so that no ground bouncing occurs on the input side due to the large ripple currents on the power side. For an example of how something like this can be done, you can take a look at the GERBER layout of the STEVAL-IPM10B.

Hope that helps?

Regards
/Peter

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    Hasan06Author
    Associate
    April 8, 2025

    Thank you so much, dear Peter.

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