TMC246 Motion Control IC

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New part number – Please see TMC246B-PA

The TMC246 is a dual full bridge driver IC for bipolar stepper motor control applications. The integrated unique sensorless stall detection ( StallGuard™ makes it a good choice for applications, where a reference point is needed, but where a switch is not desired. Its ability to predict an overload makes the TMC246 an optimum choice for drives, where a high reliability is desired. The TMC246 is realized in a HVCMOS technology combined with Low-RDS-ON high efficiency MOSFETs ( It gives the choice to operate at high temperature or at high current of up to 1500mA. Its low current consumption and high efficiency together with the miniature package make it a perfect solution for embedded motion control and for battery powered devices. Internal DACs allow microstepping as well as smart current control. The device can be controlled by a serial interface (SPI™) or by analog / digital input signals. Short circuit, temperature, undervoltage and overvoltage protection are integrated.


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Drives 2-phase stepper motors
Integrated load measurement allows sensorless stall detection (Pat fi.) StallGuard
Up to 1500mA output current
7V to 28.5V motor supply voltage
Low power dissipation via low RDS-ON power stage
4 bit DACs allow up to 16 times -stepping via SPI, any resolution via analog control
Control via SPI with easy to use 12 bit protocol or external analog / digital signals
Status Flags for short circuit, open load, over temperature, temperature pre-warning, undervoltage
Short circuit, over temperature, under voltage and overvoltage protection integrated
Internal open load detector
Mixed decay feature for smooth motor operation
3.3V or 5V operation for digital part
Current control allows cool motor and driver operation
Stand by and shutdown mode available
User programmable slope control to reduce electromagnetic emissions
Chopper frequency programmable via a single capacitor or external clock
PQFP44 package


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Trinamic Application Note
Trinamic Application Note
Trinamic Application Note
Trinamic Application Note
Trinamic Application Note
Trinamic Application Note
Trinamic TMC246 Datasheet

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TMC246 Motion Control IC
Part #: TMC246A-PA
TMC246 Motion Control IC