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Original question:

TPS2H160-Q1: The IC is burning under specific circumstances

TPS2H160-Q1: Connection to GND plane when there's a GND Network on a high side switch

Nuri Seko
Prodigy 160 points
Part Number: TPS2H160-Q1

Tool/software:

Hello TI Support Team,

In the datasheet of "TPS2H160-Q1", there's a proposed layout for the case where there's a GND Network.

The following picture was taken from the datasheet:

The line on the top right corner indicates a connection to the rest of the GND plane. Does that line represent a trace, a resistor, or a capacitor?

Also would the second layer underneath this IC(GND Layer) also have a cutout?

As a general rule with such ICs, would it be ok/adviceable to connect the DAP to the Board GND and the GND pin to the "GND Network"? How would the performance of this IC be under EMC validation when comparing the case with and without a GND Network?

Thank you in advance,

Nuri

  • +1
    TI__Intellectual 2470 points

    Hi Nuri,

    1. The only connection between the GND of the TPS2H160-Q1 and the GND of the board is through the GND Network as it protects the TPS2H160-Q1 from reverse current through ground. The line of the image is a graphical error

    2. the layer underneath would also need the cutout so that the grounds do not connect in any other way except through the GND network

    3. in order to optimize IC performance we recommend the following bypass capacitors

    As long as you have the bypass capacitors it should meet the system level requirements.

    Best Regards,

    Nicholas

  • 0 in reply to Nicholas Petersilge
    Prodigy 160 points

    Hello Nicholas,

    That perfectly answers my question, thank you!

    Best Regards,

    Nuri