The TMCM-1181 is a single axis stepper motor controller/driver module for sensorless load dependent current control. The device is powered by Trinamic stallGuard2™, coolStep™ and spreadCycle™ chopper technology and has a trapezoidal ramp generator. The TMCM-1181 is capable of driving up to 9A of current from each output (with proper heatsinking). It is designed for an operating voltage of 11...28V. The device provides a RS485, USB and GP-in interface. An integrated protocol processor supplies a high level TMCL communication.