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5-phase stepping motor

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xzswq21:
Hello
Actually I have chosen a 5-phase stepping motor driver and the IC number is SI-7510 but I see the minimum main voltage should be 10V. ( Main voltage should be between 10V to 24V)
now my problem: I have found many 5-phase stepping motors but when I see the specification of the motors I see only a resistance and a current, for example 0.3 OHM and 2.7A.
how should I find a 10V or 12V stepping motor? I think I should calculate something from the specification.
can I use a 5-phase 0.5 OHM and 1.5A Motor or a 0.4 OHM and 1.2A Motor or ...?



Thanks

rstofer:
In vague terms, you want to select as high a voltage as the chip will allow and connect the sense input to control the winding current.  The higher voltage will drive the winding current to maximum a lot faster in the presence of winding inductance and will increase the workable step rate.

You might spend some time with "Jones On Steppers"  https://homepage.divms.uiowa.edu/~jones/step/

I didn't spend much time looking at the schematic, it seems complex, but I did notice that the Sense input is not used.  Hm...

I might start with the Typical Application schematic from the datasheet - top left of page 2

https://www.semicon.sanken-ele.co.jp/sk_content/si-7510_ds_en.pdf

jmelson:
There is no such thing as an xx Volt stepper.  The only spec that matters is winding current.
Cheap consumer stuff like floppy disk drives used motors with artificially high winding resistance so they could be run without a current limiting resistor or PWM circuit.
So, for your use, all you need to do is supply enough voltage for the driver chip to operate, and then you will see that higher voltages permit the motor to operate at higher speeds before the torque falls off.
Berger-Lahr invented the 5-phase stepper, and licensed the technology to Oriental Motor, with theur Vexta and super Vexta lines of motors and drivers.
Jon

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