Subject: Allegro Stepper Drivers
Posted by
beer@s...
on 2000-02-25 14:24:58 UTC
On 25 Feb, CAD_CAM_EDM_DRO@onelist.com wrote:
out AND keeping package dissipation within spec. Good luck getting the
current in and out with leads that size without burning PCB traces.
Mostly, though, it's too many chips. There's another chip required for
step/dir -> phase logic and at least another for current chopping,
probably two, still more for 1/2 & 1/4 step logic.
Contact Dan Mauch - the 3776 IC + FETs is still the way to go.
Alan
--
Alan Rothenbush | The Spartans do not ask the number of the
Academic Computing Services | enemy, only where they are.
Simon Fraser University |
Burnaby, B.C., Canada | Agix of Sparta
> Subject: Allegro Stepper DriversTo be honest, I haven't .. nor will I. Good luck getting the current
>
> > From: "Brian Pitt" <bfp@...>
> >
> > alegro has a lot of stuff for driving steppers
>
> Hmm, this looks interesting: A39711SLB
>
> A 2.5 Amp 50v dual bridge that says it can be paralleled for 5 amps.
> So 2 chip/axis 5 amp solution?
>
> http://www.allegromicro.com/selguide/motors1.htm
>
> They are just over $5 at arrow - tempting to get a few to play with
> and try to interface them to L297's.
>
> Anyone tried them?
out AND keeping package dissipation within spec. Good luck getting the
current in and out with leads that size without burning PCB traces.
Mostly, though, it's too many chips. There's another chip required for
step/dir -> phase logic and at least another for current chopping,
probably two, still more for 1/2 & 1/4 step logic.
Contact Dan Mauch - the 3776 IC + FETs is still the way to go.
Alan
--
Alan Rothenbush | The Spartans do not ask the number of the
Academic Computing Services | enemy, only where they are.
Simon Fraser University |
Burnaby, B.C., Canada | Agix of Sparta