lm4780 bridge pcb layout

dgaxeman · 30th April 2006, 01:06 AM

first one i made. transfer one side and drill 2 component holes to line up on. touch up holes with a majic marker. deburr holes on other side. aline transfer with holes and etch. the caps you can raise off the board a 1/8 inch or so to solder under them where the traces meet top and bottom. wont hurt a thing .solder a wire in the hole where the chips heatsink will be to connect top and bottom trace there as well. schematic is on the chips data sheet.
you will need to solder some on top of the chips pins as well. it is
best to just put the chip into the board not too deep so the straight part of the pins are showing on top to aid in soldering

dgaxeman · 30th April 2006, 03:23 PM

here is the solder side

dgaxeman · 30th April 2006, 03:23 PM

parts placement refer to the lm4780 data sheet

kalmara · 9th May 2006, 02:35 PM

Arent the IC's too close to each other, can it coll normal ? ? ?

1000W · 11th May 2006, 07:00 AM

dgaxeman,
Can you post the eagle files? Also whats the size of the PCB?
-MP

dgaxeman · 14th May 2006, 07:07 PM

i use ivex windraft and winboard not sure if you can transfer these to eagle

1000W · 15th May 2006, 06:28 AM

Is there an eval of this s/w somewhere?

jackinnj · 15th May 2006, 02:10 PM

this works:

the Gerbers can be found on the AudioXpress website --

9th May 2006, 02:35 PM	#4
kalmara diyAudio Member Join Date: Dec 2005 Location: Vratza, Bulgaria	Arent the IC's too close to each other, can it coll normal ? ? ? __________________ Insane HONDA FAN !!! Variable Valve Timing and Lift Electronic Control equals....HIGH ADRENALINE !

14th May 2006, 07:07 PM	#6
dgaxeman diyAudio Member Join Date: Feb 2006 Location: usa	eagle files i use ivex windraft and winboard not sure if you can transfer these to eagle

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11th May 2006, 07:00 AM	#5
1000W diyAudio Member Join Date: Dec 2005 Location: Bangalore	dgaxeman, Can you post the eagle files? Also whats the size of the PCB? -MP

15th May 2006, 06:28 AM	#7
1000W diyAudio Member Join Date: Dec 2005 Location: Bangalore	Is there an eval of this s/w somewhere?

15th May 2006, 02:10 PM	#8
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	this works: the Gerbers can be found on the AudioXpress website --

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