TRINAMICTMC389三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!

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 NP 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

TMC389应用:

Precision three phase stepper motor drives

Stage lighting

Medical applications

Optical applications

Robotics

Motor type

3 phase Stepper

图1.TMC389基本应用框图

图2.TMC389方框图和应用电路图

图2.TMC389采用外接栅极驱动器的高压大电流功率级电路图

图2.TMC429 StepDir控制器和SPI互连的示例图

TMC389评估板

The TMC389 evaluation board features a TMC389 with external power MOSFETs plus a microcontroller, which allows interfacing to a PC for visualization and control of all parameters. The motor can be operated via the step and direction interface, using either an external source, or using the integrated microcontroller as a step pulse generator.

The TMC389-EVAL allows you to explore all functions of the TMC389. The evaluation board comes with a PC software which gives you access to every function of the driver. It comes along with a StepDirection interface, a RS232 and a USB port. The TMC389-Eval is a complete "plug and play" solution, additionally only a motor, a PC and a power supply are required!

TMC389评估板亮点:

Evaluate all features of the TMC389

Use stallGuard2 with your motor

Use coolStep with your motor

Control all parameters from a PC

Motor current can be set to up 6A depending on sense resistor selection.

Supply voltage up to 40V (MOSFETs can be exchanged against 60V 2A types)
Access all pins of the TMC389

Motor type

3 phase Stepper

TMC389-EVAL contains

TMC389-Evaluation Board

USB cable for connection to PC

software for Windows (downloadable)

documentation, board and circuit description and all datasheets (downloadable)


图3.TMC389-EVAL评估板外形图

图4.TMC389-EVAL评估板应用框图

图5.TMC389-EVAL评估板元件布局图


图6.TMC389-EVAL评估板电路图(1)

图7.TMC389-EVAL评估板电路图(2)

图8.TMC389-EVAL评估板电路图(3)

图9.TMC389-EVAL评估板电路图(4)
详情请见:
http://www.trinamic.com/tmctechlibcd/integrated_circuits/TMC389/TMC389_datasheet.pdf
和
http://www.trinamic.com/tmctechlibcd/integrated_circuits/TMC389/TMC389-EVAL/TMC389-EVAL_manual.pdf
以及
http://www.trinamic.com/tmctechlibcd/integrated_circuits/TMC389/TMC389-EVAL/TMC389-EVAL_V10_schematic.pdf