This is a stepper motor driver introduced by DFRobot for those projects that require powerful stepper motors, such as a pair of automatic curtains, an XY Plotter.
This shield allows an Arduino to drive stepper motors (up to 2A per motor coil, 40V max). This stepper motor drive shied adopts a TMC260 chip which is the first energy-efficient high precision microstepping driver IC for bipolar stepper motors with integrated power MOSFETs.
The unique high-resolution sensorless load detection stallGuard2™ is used 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 TMC260 an optimum choice for drives where high reliability is desired at a low cost.
The new patented spreadCycle™ PWM mixed decay chopper scheme ensures the best zero crossing performance as well as high-speed operation. The TMC260 can be driven with Step & Direction signals as well as by serial SPI™ interface.
Using the microPlyer™ allows operating the motor with the highest 256 µStep smoothness reducing the input frequency to 16 µSteps. A full set of protection and diagnostic features makes this device very rugged. It directly drives stepper motors with up to 2A. This way it reaches the highest energy efficiency and allows driving of a high motor current without cooling measures even at high environment temperatures.
Specification
For two-phase stepper motors
Arduino compatible
Drive Capability up to 2A motor current
Highest Voltage up to 40V DC
Standard SPI and STEP/DIR interfaces simplify communication
Lightest Resolution up to 256 micro steps per full step
Protection Diagnostics: overcurrent, short to GND, overtemperature & undervoltage
StallGuard2: high precision sensorless motor load detection
coolStep load dependent current control for energy savings up to 75%
microPlyer: Microstep interpolator for obtaining increased smoothness of microstepping over a STEP/DIR interface
SpreadCycle High-precision chopper algorithm available as an alternative to the traditional constant off-time algorithm
Low Power Dissipation, low RDSON & synchronous rectification
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