TMC246B-PA

TMC246B-PA is a TRINAMIC® high current microstep stepper motor driver with stallGuard™, protection / diagnostics and SPI interface. It is a dual full bridge driver IC for bipolar stepper motor control applications. The integrated unique sensorless stall detection (pat. pend.) 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. It is realized in a HVCMOS technology combined with Low-RDS-ON high efficiency MOSFETs (pat. pend.). It allows driving a coil current of up to 1500mA even at high environment temperatures. 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.

• 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, overvoltage and over temperature protection integrated
• Status flags for overcurrent, open load, over temperature, temperature pre-warning, undervoltage
• Integrated 4bit 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
• PQFP44 package, automotive temperature range from -40 to 125°C