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View Full Version : Power traces under Prop LQFP-44



johnfl68
05-21-2008, 08:33 PM
Hello:

I don't know if any of the Parallax people would be willing to share how they did the power traces to the prop under the LQFP on the demo board?

I am not used to doing surface mount board layout. I have a good idea from the back side of the demo board as to what you might have done, but I am curious as to what the top looks like under the chip.

I know to use the ground plane on the back side, and keeping the power traces a bit larger. Any other recommendations would be helpful.

Thanks!

John

Paul Baker
05-21-2008, 11:27 PM
Here are the layout captures, first is both layers, second is top, last is bottom. In the top layer the Red traces and the grey plane are all the same metal layer.

On the bottom layer the light blue is just the mechanical layer to show you where the Propeller sits.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Paul Baker (mailto:pbaker@parallax.com)
Propeller Applications Engineer
[/url][url=http://www.parallax.com] (http://www.parallax.com)
Parallax, Inc. (http://www.parallax.com)

johnfl68
05-22-2008, 01:28 AM
Paul:

Thank you very much!!!!

John