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Motion Controllers and Motor Drivers for Stepping Motors | Analog Devices
Analog Devices
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  • Analog Devices
  • NEXT Mobility
  • ICT and Industrial

Motion Controllers and Motor Drivers for Stepping Motors

Analog Devices' industry-leading motion control products feature a hardwired architecture delivering improved energy efficiency, stall prevention, and reduced motor noise and vibration. This makes them ideal for integration into products requiring advanced control, such as robotics, medical equipment, and 3D printers. In addition to mechatronic solutions including ICs and motors, we provide the TMCL IDE integrated development environment to accelerate application development.

ADI Trinamicによるベネフィット／ダウンタイムを低減／エネルギー効率アップ／モーター音をカット

Features

  • Hardwired architecture integrates control algorithms for power saving, quiet operation, and reduced downtime.
  • Parameters like position, velocity, and acceleration can be changed on the fly.
  • The TMCL IDE integrated development environment enables efficient plug-and-play development.

Functionality

StallGuard™

A sensorless stall prevention algorithm minimizes downtime. Surplus energy supplied to the motor, which serves as a measure of mechanical load, is estimated from the back EMF generated during rotation. If this surplus energy is depleted, the motor can stall. This function prevents the motor from losing synchronization by stopping rotation before the surplus energy runs out.

SteathChop

Sensorless load detection and automatic current control ensure the motor is always controlled with optimal current, reducing power consumption. StallGuard reduces surplus energy by appropriately controlling the supply current based on the estimated surplus energy value. The graph below, obtained with the TMCL IDE integrated development environment, shows that the motor drive current decreases when the preset SG value (surplus energy) is large. Conversely, when the mechanical load increases, the SG value decreases, but the motor drive current is automatically increased to prevent stalling.


モータ駆動電流とSG値のグラフ

StealthChop™

This technology achieves ultra-quiet, low-speed operation by minimizing audible noise caused by magnetostriction. In current mode PWM control, like SpreadCycle, the control is affected by the current sensing value of each PWM cycle, leading to the drawback of increased motor current ripple in response to slight noise. StealthChop employs voltage mode PWM control to reduce current ripple, suppress magnetostriction vibration in the stator materials, and reduce audible noise.


  • SteathChop

  • SpreadCycle

Motor drive current

  • SteathChop

  • SpreadCycle

Motor drive current (green) and drive voltage (light blue, yellow)

Product Categories

Driver

These devices integrate all necessary functions, including pre-driver, sensing, protection, and power output stage circuits, into a single package. Features such as StallGuard, StealthChop, and CoolStep are implemented via hardwired architecture, with a product lineup supporting various voltage and current ratings. The motor is driven based on the input Step/Dir signals.

Motion Controller

A motion controller generates Step/Dir signals based on input parameters such as position, velocity, and acceleration, which can be changed on the fly during operation. This eliminates the need for the main microcontroller unit (MCU) to generate Step and Direction signals, significantly reducing the MCU's computational load, development effort, and demanding real-time processing requirements.

The trapezoidal ramp profile accelerates at a constant rate until reaching maximum speed, then decelerates at a constant rate to stop at the designated position. This helps reduce real-time processing from demanding MCUs.

Acceleration and deceleration rates can each be configured in two distinct stages. This feature makes it possible to reduce vibration and audible noise associated with sudden speed changes.

Alternatively, the S-shape profile achieves smoother speed transitions by gradually changing acceleration and deceleration. This gradual change helps reduce vibration and audible noise often caused by abrupt speed shifts. The S-shape profile's ability to minimize resonance-induced vibration makes it particularly suitable for applications sensitive to disturbances, such as those involving liquids.

Difference between S-shape and trapezoidal patterns

CDriver™

CDriver integrates a driver and motion controller into a single IC.

Module

The module offers a full-featured board-level solution, suitable for applications including lab automation, manufacturing, industrial automation, medical, and robotics. Utilizing TMCL-IDE, it also supports standalone operation, eliminating the need for a HOST controller.

PANdrive

This product combines a motor and a module.

PANdriveのシステム構成図

Integrated Development Environment (TMCL-IDE)

The Integrated Development Environment, or TMCL IDE, stands for Trinamic Motion Control Language Integrated Development Environment. It is specifically designed for developing applications that use ADI Trinamic™ modules and chips. This graphical user interface provides tools allowing users to easily configure parameters, visualize data in real time, and develop standalone applications.

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