Hello, I have a question about using the polygon tool.
I just finished a design where I had half of my top layer as a VDD plane, and half of my top layer and a GND plane. On the VDD half of the board, I had a power plug and a voltage regulator with an associated capacitor. What I wanted to do was run a thick trace from the regulator to the capacitor and then have the VDD plane connected from the capacitor. This would make it so that everything connected to that plane would be "downstream" of the capacitor. However, because the trace to the capacitor and the plane had the same net (electrically they are connected) the plane simply overlapped the trace removing the "downstream" aspect. To solve the problem I had to make another polygon with a different net with a weird shape that followed the trace and gave it a higher rank so that the VDD plane couldn't get near the trace. Is there a more elegant way of solving this problem?
I also had a similar problem where I wanted part of the plane to have islands and part of it to not have islands. In order to make some of the islands disappear I had to make extra polygons with different nets.
Is there a guide to using the polygon tool that covers some of the more advanced features anywhere? Does anyone have experience with this problems?
Thank you.
