Hello,

Can anyone explain to me how to calculate the supply voltage and the current needed for stepper motor ? Or maybe a link ?

I have 3 stepper motors rated at :
- 5,2V and 1A per phase for one
- 2,6V and 1,2A per phase for the 2 others

I need the formulas for an unregulated PSU as my driver cards use chopper mode. They use LMD18245T rated at 55V/3A.

Thank you for all the help you can give me !

Gaelle