TRINAMIC Motion Control's new TMC2660 stepper motor driver IC supports motor drive currents up to 4A. The new IC integrates both a pre-driver for real-time calculation of motor coil current values, and power MOSFETS for amplification of coil outputs to directly drive an external motor.
Packaged in a single multi-chip module, the integrated driver/amplifier achieves the lowest power dissipation currently available for a 4A stepper motor driver. With an Rds(on) of 65mΩ, the TMC2660 dissipates just 2.8W at 4A, an 85% reduction compared with the most competitive solution previously available. The new device’s minimal power dissipation eliminates the need for a heat sink, enabling highly dense board designs and reduced component count and cost.
With a peak output current rating of 4A, the TMC2660 can drive motors as large as NEMA 23. The new device is both pin- and software-compatible with TRINAMIC’s TMC260/261 devices, which support motors up to NEMA 17.
To support rapid product development and prototyping, TRINAMIC offers a complete TMC2660 design kit with evaluation board, as well as an Arduino daughter card (shield).
The TMC2660 is sampling in August 2013, and production volumes will be offered in Q4 2013. The device is available in a 44-pin PQFP package.