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Overlap error under IC

autodeskguest

I have manually placed GND vias under the IC, but the DRC can't accept it,

showing Overlap error, like seen in the snapshot. Why?

 

Regards,

 

 

 

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  • "Thiago Henrique Rodrigues" <thiago_hr@yahoo.com.br> wrote in message

    news:hifi5f$pa5$1@cheetah.cadsoft.de...

    Actually, the big square under the IC has no name, nor it is connected to

    GND... I manually connected it using the VIAS. So I can leave it like

    this, that will work, right?

     

    No that will not work, cause the SMD pad will get a signal name wether you

    set it or not.

    You should edit your device so that the smd will get a pin that you can

    connect to GND. It could be a separate symbol with the pin direction set to

    'power' and named 'GND' (and set add feature of this symbol to suiteable

    value - rtfm). This will hide the gnd connection, although personally I

    don't like hidden stuff.

     

     

     

Reply

  • "Thiago Henrique Rodrigues" <thiago_hr@yahoo.com.br> wrote in message

    news:hifi5f$pa5$1@cheetah.cadsoft.de...

    Actually, the big square under the IC has no name, nor it is connected to

    GND... I manually connected it using the VIAS. So I can leave it like

    this, that will work, right?

     

    No that will not work, cause the SMD pad will get a signal name wether you

    set it or not.

    You should edit your device so that the smd will get a pin that you can

    connect to GND. It could be a separate symbol with the pin direction set to

    'power' and named 'GND' (and set add feature of this symbol to suiteable

    value - rtfm). This will hide the gnd connection, although personally I

    don't like hidden stuff.

     

     

     

Children
  • in reply to autodeskguest

     

    "Morten Leikvoll" <mleikvol@yahoo.nospam> escreveu na mensagem

    news:hiho1u$3mk$1@cheetah.cadsoft.de...

    "Thiago Henrique Rodrigues" <thiago_hr@yahoo.com.br> wrote in message

    news:hifi5f$pa5$1@cheetah.cadsoft.de...

    Actually, the big square under the IC has no name, nor it is connected to

    GND... I manually connected it using the VIAS. So I can leave it like

    this, that will work, right?

     

    No that will not work, cause the SMD pad will get a signal name wether you

    set it or not.

    You should edit your device so that the smd will get a pin that you can

    connect to GND. It could be a separate symbol with the pin direction set

    to 'power' and named 'GND' (and set add feature of this symbol to

    suiteable value - rtfm). This will hide the gnd connection, although

    personally I don't like hidden stuff.

     

     

     

    I still don't understand that error... there is this ESD diode, with 3

    terminals (two of them connected to GND in schematic). I want to put vias on

    these pads directly to GND, but it keeps generating overlap error. But if I

    create a via name GND on the side of the diode, it connects the pad to the

    via... what is wrong?