What power supply should I use?

Other Hardware Motors, Mechanics, Power and CNC
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I have a nema 23 bipolar stepper motor that runs at 1.5 A per phase. I'm thinking of buying a DRV8825 to control it.

I would like to know what the current range is to power the Vmot pin, I understand that it can be supplied (8.2V - 45V) but I could not find data about the current values.

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Welcome to the forum

Is this not relevant ?

3

Understand that current is not supplied in the delivery sense; current is drawn by the output device(s).
So voltages must match.
Current, as long as the power supply is rated comfortably higher than the sum of the devices pulling current at their extreme (such as stall current in servos) * about 50% more for headroom, you should be good.

4

The DRV8825 is a current controlling driver. It works similar to a buck converter and mandatorily needs a capacitor ( >=100µF) at the Vmot pin!
To determine the PSU to use you must consider the POWER the stepper needs, not the current. The current per phase is not sufficent to determine the PSU. You need the rated voltage at this current or the resistance of the coils.

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The DRV8825 is capable of driving up to 2.5 A of current from each output (with proper heat sinking, at 24 V and 25°C). So 5A total would be the maximum

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