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star point grounding

TooBorg

 Hi @all!

 I have a question concerning "star point grounding". Let me explain, what i mean: If i have two (or more) different grounds, let's say digital (DGND) and power (PGND), i want to keep them seperated from a connector until i reach a special point on the PCB, for example a microcontroller, where i want to connect both grounds.

To be able to connect both grounds, i have to create a connection in my schematic, right? But if i do so, it will result in just one net, connecting each point conntected either to DGND or PGND. How can i keep both nets seperated until i reach this special point? Especially with shapes ("GND-planes")?

To  be clear: Of course, i can create two planes and creating voids around the pins of the "other GND", but i do have a connector with ~3.000 pins, at least half of them GND-pins. So i would prefer a clean solution - not a "hack" ;)

 

Thanks for your input! 

  • TooBorg

     Hi Steve,

     this looks exactly like what i was looking for! Thanks!

     

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