Electronics > Beginners
Constant current PWM
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rstofer:
You can google for 'High side current sense amplifier'

https://www.analog.com/en/analog-dialogue/articles/high-side-current-sensing.html

Wouldn't you know it, the app note talks about solenoid control.

Personally, I would see if the mechanics of the situation wouldn't accommodate a linear actuator.  No excess power dissipation, simple stepper motor control and a number of ways to implement position feedback.
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