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Motor drive IC supports 4A currents

Posted: 17 Jul 2013 ?? ?Print Version ?Bookmark and Share

Keywords:TRINAMIC? motor drives? power dissipation? MOSFETS?

TRINAMIC Motion Control has expanded their line of micro-stepping motor drives with a new IC that supports motor drive currents up to 4A. The new 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 65m, the TMC2660 dissipates just 2.8W at 4A, an 85 per cent 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 popular TMC260/261 devices, which support motors up to NEMA 17.

Stepper motors are a cost-effective solution for applications that require high-torque at low speeds and precise control of motor axis rotation. Widely used in printers, scanners, robotics, medical and scientific equipment and other applications, TRINAMIC estimates that more than one billion stepper motors are shipped ever year.





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