I am a newbie to Stepper Motors. I am working on L9942. The different modes that it can chop the current are Full mode, 1/2, 1/4 and 1/8. When 1/4, 1/8 modes are used with lower STEP Frequency or when Full and 1/2 modes are used with Higher STEP Frequency , there is no current chopping at the output for coils. What is the reason behind it?
My aplication is to control position of the Stepper Motor with a stipulated time. The time is large and the steps to be taken is less in requirement. So I need to drive at very low frequency which I am not able to.
Also is there any other way to control using the same L9942?
Please help me out.