I have many of the pololu 8825 drivers. I have the heat sink mounted and have air being blown on them. According to the spec sheet I can put 2.2amps PER PHASE through them or 4.4amps total for a typical 2 phase stepper motor.
I have purchased the ST-6600 from stepper online. It has a rating of 4amps per phase (5amps unrated).
It has a large cooling fin and barely gets warm when I set the switches to a full 4amp.
1) Am I correct in my assumptions that pololu is 4.4amps total and st-6600 has at 8amps total current?
I just want to make sure I am not damaging my motors while at the same time pushing through as much amperage as possible for increased holding power.