• L298 L297 Stepper Driver For Mac Pro
• L298n Motor Driver Schematic

Well the uln2003, got more clear to me. It as 7 amplified OUT signals, or hmm i gues it provides negative for the inner motor coils as their center wire of the two connected coils of one side of the motor gets a + voltage.

Its the LN297, that is more of a mistery to me, and i got the impression that it is not optimal used. For example what does INh1 do and INh2?

There is also Sens vref and osc, EN and ctrl and Sync what do they do? Those are not use or connected together here, but must have a separated function (or else why create a pin for it). I understood from a friend that a darlington is also able to handle higer currents, i believe the normal uln2003 handles 20v max. Or do you mean something else, i was wondered too about these sense functions, must perhaps be able to do something more? Might it rather be a protection (ie if the motor cannt rotate for a mechanical reason, that the circuit wont get damaged i'm wondering. Alhtough the uln2003 would protect the l297 for such mechanical failures too i think, the driver electronics wont backfire.

Which would happen if the l297 had no driver unit at all. Perhaps the l298 needs a bit of protection too?? Perhaps as it might be designed for even much larger currents? (it got a huge cooling fan). I understood from a friend that a darlington is also able to handle higer currents, i believe the normal uln2003 handles 20v max.

Or do you mean something else, i was wondered too about these sense functions, must perhaps be able to do something more? Might it rather be a protection (ie if the motor cannt rotate for a mechanical reason, that the circuit wont get damaged i'm wondering. Alhtough the uln2003 would protect the l297 for such mechanical failures too i think, the driver electronics wont backfire. Which would happen if the l297 had no driver unit at all. Perhaps the l298 needs a bit of protection too?? Perhaps as it might be designed for even much larger currents?

L298 L297 Stepper Driver For Mac Pro

(it got a huge cooling fan). I have small motors a diameter of 1.5 cm and a height of 2 cm, i have no details about them, but those dont look like they would run on 60volt. Maybe 5, or 10 volt and not like 2 ampere i think. So i think it will work. Just in case i might later try a l298 or variant (as i dont like that pin construction, a SN754410 is the same but better fits a breadboard).

L298n Motor Driver Schematic

Do you recommend particular diodes, I have heard fast ones are required for schemes that make use of a L298 or variant of it.? Also while i'm new into this stepper thing, i've seen some samples of complete solutions inside IC's (driver and stearing scheme, all in one IC). But some of those where no longer fabricated, perhaps do you know of what is new and good in this small stepper motor IC scene? I bett that fabricators create once in a while new chips for this that perform better.