Re: Flyback Driver PCBs

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Eastern Voltage Research Corporation" <dhmccauley-at-easternvoltageresearch-dot-com> 


How are you driving the upper fet of your half-bridge?  Hopefully you have
some sort of isolation in there (transformer) to drive it
if you are switching more than 30-40VDC.

Also, aluminum based PCB? ? ?  "Large currents the bridge will be
switching?"  This can all be done just fine on a small PCB board.
I've designed and built numerous circuits on simple 1oz copper boards that
could take 20A of current.  Just use thick copper planes as
traces and double up on top and bottom layers.

And if by aluminum you mean an IMS type substrate board, there is no reason
in the world to be doing something like that.

Dan


 > Okay!  at least some people want them!  The board looks really good,  only
 > 3.5 X 4.5 and has everything but the low voltage transformer, and the high
 > voltage power to the flyback primary.
 >
 > I sent the quote in today hopefully they'll get back to me later today.
The
 > PCB will be aluminum based (I hope) so it will be able to carry the large
 > currents etc that the bridge will be switching.
 >
 >
 > Regards - Jim Mitchell