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.
Specifications
2-phase bipolar stepper motor driver
Sensorless stall detection stallGuard™ and load measurement integrated
Control via SPI with easy-to-use 12 bit protocol or external analog / digital signals
Short circuit protection integrated
Overvoltage protection integrated
Status flags for short circuit, open load, over temperature, temperature pre-warning, undervoltage
Integrated 4 bit DACs allow up to 16 times microstepping via SPI, any resolution via analog control
Mixed decay feature for smooth motor operation
Slope control user programmable to reduce electromagnetic emissions
Chopper frequency programmable via a single capacitor or external clock
Current control allows cool motor and driver operation
Internal open load detector
7V to 34V motor supply voltage
Up to 1500mA output current and more than 800mA at 105°C
3.3V or 5V operation for digital part
Low power consumption via low RDS-ON power stage
Standby and shutdown mode available
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.
Specifications
- 2-phase bipolar stepper motor driver
- Sensorless stall detection stallGuard™ and load measurement integrated
- Control via SPI with easy-to-use 12 bit protocol or external analog / digital signals
- Short circuit protection integrated
- Overvoltage protection integrated
- Status flags for short circuit, open load, over temperature, temperature pre-warning, undervoltage
- Integrated 4 bit DACs allow up to 16 times microstepping via SPI, any resolution via analog control
- Mixed decay feature for smooth motor operation
- Slope control user programmable to reduce electromagnetic emissions
- Chopper frequency programmable via a single capacitor or external clock
- Current control allows cool motor and driver operation
- Internal open load detector
- 7V to 34V motor supply voltage
- Up to 1500mA output current and more than 800mA at 105°C
- 3.3V or 5V operation for digital part
- Low power consumption via low RDS-ON power stage
- Standby and shutdown mode available
