Re: A3977 Microstepping Driver PCB Update

I wrote:

>doesn't the package for the A3977 want a big fat trace on the board

underneath it for a heatsink?

Dooh, I was looking at the wrong package on the datasheet (the TSSOP
style) It is a neat looking chip though. At work I'm designing a
stepper-driven gantry (lucky me, but I need to use off-the-shelf
mechanical components) and this chip looks attractive. Our PC board
designer was showing me the way he does the solder-pad thermal traces for
components like the TSSOP package, which is intended to be soldered down
to a beefy pad with lots of vias.

In the words of Emily Litella, "Never Mind" :-)

Best regards,

Randy

Randy Gordon-Gilmore ,----.___________ ______________ _________________
ProtoTrains // = = === == || == == == = || == == == = == =|
Rio Vista, CA, USA /-O==O------------o==o------------o==o-----------o==o-'
zephyrus@... http://www.prototrains.com