I'm trying to figure out how does this DC motor controller circuit works. The circuit originally controls 2 DC motors for lifting a table. I extracted section relating to one motor only.
I added my own analysis with red text of what I think the circuit is doing.
1- Is it a feedback loop circuit that I have identified? if yes, how does it work? any references?
2- Why is the PWM signal connected to multiple transistors and MOSFET just to drive IOUT to ground ?