TRINAMIC TMC389三相步进马达驱动方案
TRINAMIC 公司的TMC389是三相步进马达驱动器,集成了低谐振的三相斩波器用于静态马达工作,能直接驱动三个外接N/P沟双MOSFET,马达电流高达8A和60V,多达171个微步距,采用基于自动负载调整马达电流的coolStep™s20,节能高达75%,主要用在精密三相步进马达驱动,医疗和光学应用,机器人和舞台照明.本文介绍了TMC389主要特性和优势,方框图和应用电路图,和高压大电流功率级电路图以及评估板TMC389–EVAL主要特性,应用框图,电路图和PCB元件布局图.
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.
TMC389产品亮点:
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™s20 : Save up to 75% of energy!
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