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Stepper motor driver supports currents up to 4A

Posted: 17 Jul 2013     Print Version  Bookmark and Share

Keywords:TRINAMIC Motion Control  TMC2660  stepper motor driver  MOSFET  TMC260/261 

TRINAMIC Motion Control has rolled out a stepper motor driver IC that supports currents up to 4A. According to the company, the TMC2660 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 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.

The stepper motors are geared for printers, scanners, robotics, medical and scientific equipment and other applications. The TMC2660 is sampling in August 2013, and production volumes will be offered in 4Q13. The device is available in a 44-pin PQFP package, priced at $2.90 in 1,000 unit volumes.

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).

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