- Sun Dec 13, 2015 4:23 pm
#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.
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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