TMC3890 pages

TMC389 DATASHEET (V. 1.13 / 2012-AUG-13)

1

TMC389–DATASHEET
Energy saving high resolution microstepping
three phase stepper driver with step and
direction interface and external power stage

®

TRINAMIC Motion Control GmbH & Co. KG
Hamburg, GERMANY
www.trinamic.com

1 Features
The TMC389 is an energy efficient three phase stepper motor driver for high resolution microstepping
applications. It integrates a low resonance three phase chopper for quiet motor operation. Its step and
direction interface allows simple use. An SPI™ management interface allows for parameterization and
diagnostics. The TMC389 directly drives 3 external N/P channel dual MOSFETs for motor currents up
to 8A and up to 60V. Protection and diagnostic features further reduce system cost and increase
reliability.
Highlights
Up to 171 microsteps (256 sine wave steps) using step/direction interface or 20 Bit SPI™ interface
High precision sensorless motor load measurement stallGuard2
Energy efficiency and coolness by automatic load dependant motor current regulation coolStep™:
Save up to 75% of energy!
Internal microstep extrapolation allows 256 wave step smoothness with low frequency step input
Dual edge step option allows half step frequency requirement, e.g. for opto-couplers
Up to 8A Motor current using external N&P channel MOSFET pairs
Synchronous rectification reduces transistor heating
9V to 60V operating voltage (peak)
3.3V or 5V interface
QFN32 package for extremely small solution with superior thermal performance
EMV optimized current controlled gate drivers – up to 45mA gate current
Overcurrent, short to GND and overtemperature protection and diagnostics integrated
Applications
Precision three phase stepper motor drives
Stage lighting
Medical applications
Optical applications
Robotics
Motor type
3 phase Stepper

Copyright © 2010 TRINAMIC Motion Control GmbH & Co. KG