I am building a board that would drive a stepper motor with PWM signal.
Is it likely that it will pass the EMC test?
Here are the details:
I am using Trinamic TMC5130 stepper motor driver chip.
The PWM frequency is 78.0 kHz
The board and the stepper are connected by 1.5 meter flat ribbon cable, (not shielded, not twisted).
The current through the stepper motor coils is up to 900mA.
Stepper coil resistance = 1.1 ohm, inductance = 2.6mH,
Power supply voltage = 12V.