Re: L297/L298

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Vlad Krupin" <vlad.cnc@...>
wrote:

>
> This is a really old thread, but I am just catching up on my email and
> wanted to add my 2c, for the record:
>
> The one advantage of L297/L298 solution is that you can chain

several L298

> chips in parallel. You can't do that with an LMD18245. Yes, the PCB

routing

> gets hairy pretty quickly, but it can be done, and it works. I am

currently

> using boards utilizing that very method - 3 L298 chips in parallel

per axis

> driving stepper motors with 5A per axis (
>

http://www.krupin.net/serendipity/index.php?/archives/56-PCB-making-the-automation-part.html

> ).
>
> Of course, one could argue that if higher currents are needed, one

should

> just go with discreet FETs anyway, and I wholeheartedly agree, but

that's a

> different topic. The point is that, in a pinch, you could get some extra
> power out of a L297/L298-based solution, and it is a remarkably simple
> circuit.
>
> Vlad

Hi Vlad,

I thought that using big power FET's was a super simple solution to
the higher power problem ?

Dave