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Questions relating to designing PCBs
By WBrumble
#186516
All,

Designing a board for an LED project I'm doing.

The driver is LGA, and combines pins for one signal.

For the pins that are square or rectangular it's okay,
Because I can just spot a SMD pad with the proper
Dimensions and it works well.

But when the pins are not and require a different shape, I
Can't figure it out, ha ha.

Attached is a photo from the data sheet that shows the
Suggested copper layout.

What I'm currently doing is putting a rectangular pad on the edge, turning off the stop and cream for the pad, then filling the rest with a polygon of copper. I can then attach a wire to the net in board layout.

But for the ground when I do a ground fill it only attaches to the pin inside the polygon not all of the polygon layout for the ground. And I need to connect all of it for good heat management.

How do you guys do LGA ICs.

Thank you all for your help.
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By WBrumble
#186517
Attached are pictures of in schematic and layout of what I'm trying to do.

Thank you.
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By Ross Robotics
#186550
I am still not exactly sure what it is you're trying to do..??