TMC246 pdf datasheet

Smart Power Microstepping PWM Motor Driver with sensorless stall detection (StallGuard™) protection, diagnostics and SPI Interface

The TMC246 is a smart power microstepping driver for bipolar stepper motors. The integrated unique sensorless stall detection StallGuard™ makes it a good choice for applications, where a reference point is needed, but where a switch cannot be used. The ability to predict an overload makes the TMC246 an optimum choice for drives, where a high reliability is desired. It provides an SPI™ interface as well as the classical analog / digital control. A full set of protection and diagnostic features makes this device very rugged. The integrated low-RDS-ON TrenchFET® power MOSFETs give an extremely high efficiency and allow driving of a high motor current of up to 1.5A per phase without cooling measures even at high environment temperatures.
The small footprint and high efficiency make the device a perfect solution for embedded motion control and even for battery powered designs