TMC262 – MEV Elektronik GmbH
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Smart Stepper Motor Gate-Driver with SPI and Step/Direction for external MOSFETs

The TMC262/TMC262C is the first energy efficient high current high precision microstepping driver IC for bipolar stepper motors. The unique high resolution sensorless load detection stallGuard2™ is used to for the world’s first integrated load dependent current control feature called coolStep™ The ability to read out the load and detect an overload makes the TMC262 an optimum choice for drives where a high reliability is desired at a low cost. The new patented spreadCycle PWM mixed decay chopper scheme ensures best zero crossing performance as well as high speed operation.

The TMC262/TMC262C can be driven with Step [&] Direction signals as well as by serial SPI™ interface. Using the microPlyer allows to operate the motor with highest 256 µStep smoothness reducing the input frequency to 16 ?Steps. A full set of protection and diagnostic features makes this device very rugged. It directly drives external MOSFETs for currents of up to 8A. This way it reaches highest energy efficiency and allows driving of a high motor current without cooling measures even at high environment temperatures.

The TMC262C is a new derivative of the TMC262 family. It is designed for compatibility to existing applications, while offering a number of enhancements and options, which can be activated using the interface. Care has been taken to ensure compatibility for both devices, even if the enhanced options are switched on.

The TMC262C is recommended for new designs.

Technical Data

Technical Data:

Motor Type: Stepper, 2-phase, bipolar
No. Axes: 1
Motor Supply: 9…60V
Logic Supply: 3,3…5V
Phase Current, RMS: ext. MOSFETs
Phase Current, peak: ext. MOSFETs
Microstep Resolution: 1…256
Interfaces: SPI, Step/Direction
stallGuard2™ X
coolStep™ X
spreadCycle™ Chopper X
microPlyer™ (interpolation) 16 to 256
stealthChop™ (no noise) no
dcStep™ no
passive breaking no
RDSon current sensing no
Programmable microstep table no
Package: QFN32 5x5mm
Order code: TMC262-LA


TMC262 datasheet (PDF)

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