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linear1 forums  |  LED discussion  |  Electronics discussion  |  Topic: Need help in Eagle, designing Rebel boards « previous next »
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Author Topic: Need help in Eagle, designing Rebel boards  (Read 432 times)
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« on: August 17, 2009, 10:05:01 AM »

Hi.

I sketched a RGB/WAR(white, amber, red) board in Eagle, intended to use in series configuration.
Now I would appreciate if someone with some experience on this field would give his/her second opinion, have I done it right?
The board sizes 0,5" x 2" , should be either with 2 or 3 oz copper.

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Eagle schematic and board files.
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« Reply #1 on: August 19, 2009, 04:10:49 PM »

electrically it looks a-ok!

what power level are you going to run the rebels at?  it doesn't appear you have the 3 sq in. per watt of copper there. Of course, with the vias insulated, you'll have to edit your gerber's outside of eagle to remove the stop covering the via pad so the solder mask can get in there, you could lube the board up and bolt it down to some nice aluminum, copper, whatever.
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« Reply #2 on: August 23, 2009, 05:53:10 AM »

Up to 700mA.
The idea was to use thermally conductive tape to attach the boards to some kind of heat sink.
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« Reply #3 on: August 24, 2009, 09:27:49 PM »

Up to 700mA.
The idea was to use thermally conductive tape to attach the boards to some kind of heat sink.

how about using jumper wires or 0 ohm resistors instead of the 2nd layer, then your pcb backside can be completely dedicated to thermal area... since the thermal pad is electrically neutral you can just do a big copper pour, and maybe specify no solder mask for that layer as well, to work better with your thermal tape.  nice fat traces on a pcb look impressive but given the short distances you're dealing with, smaller traces would give you more room for jumpers.  keep the fat pads for good mechanical stress handling of your mounting wires.
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« Reply #4 on: August 25, 2009, 02:51:46 AM »

Thanks for the advice. Here's ver.2:



Traces 16 mils, clearance between traces should be more than 10 mils. With 3oz copper and 700mA, the trace width should be enough according to calculations.
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« Reply #5 on: August 25, 2009, 10:02:14 AM »

looking good!

be sure to share some pictures when you get these back from the fab.
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« Reply #6 on: September 01, 2009, 07:07:57 PM »

something to look at for your board edge connectors:

http://www.mouser.com/AVXLEDconnectors/?utm_source=home&utm_medium=new+products&utm_campaign=167535718

not too expensive as far as high current SMT connectors go.
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Favorite numbers:
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