TMC2074-NU

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TMC2074-NU is a motor control IC that is used to regulate the speed of brushless motors such as direct current (DC) motors, brushless DC (BLDC) motors and stepper motors. It is part of the TRINAMIC Motion Control family of integrated motor drivers and controllers. The chip is designed for 3-phase BLDC and stepper motor applications and provides a wide operating range for both motor types.

Overview

The TMC2074-NU is a small, low-cost, single-chip solution for the control of BLDC and stepper motors. It integrates a 3-phase gate driver, a PWM controller, a position controller and an electronic Brake with protection circuits that monitor the voltage, current, and temperature of the system. The chip includes a stand-alone motion controller that can control the motor step-by-step or with real-time rotation information. It is also capable of running in velocity/tachometer mode or in current/torque mode. The chip supports sensor-less and hall-sensor-based commutation with automatic identification of the commutation sequence.

Features of TMC2074-NU

The TMC2074-NU has numerous features, some of the most attractive features being:

• Integrated 3-phase gate driver
• Advanced current control algorithms
• Integrated sensor-less tachometer
• Open-loop and closed-loop speed control modes
• Encoder-less stepper motor control
• Built-in protection circuits for fault handling
• Capable of running with a variety of power sources

Applications of TMC2074-NU

The TMC2074-NU can be used in a variety of applications including robotics, motion control, home appliances, industrial automation and automotive applications. The chip is well-suited to applications that require speed control, positional accuracy and high precision. Examples of applications include: robotic arms, mobile robots, industrial drives, pumps, compressors, fans, CNC machines, 3D printers and many more.

Working Principle

The TMC2074-NU employs a three-phase gate driver to regulate the speed of brushless motors such as DC motors, BLDC motors and stepper motors. It can operate in both open-loop and closed-loop speed control modes. In open-loop mode, the IC controls the speed of the motor based on voltage on the motor\'s winding while in closed-loop mode; the controller measures the motor\'s actual speed and adjusts the voltage on the motor\'s winding to get the desired speed. The IC also employs an advanced current control algorithm, which adjusts the voltage provided to the motor based on the motor\'s current. This helps reduce vibrations and enhance the accuracy and precision of the motor\'s output.

The TMC2074-NU also incorporates a built-in sensor-less tachometer, which measures the rotation of the motor without the need for an external tachometer. It also supports sensor-less and hall-sensor-based commutation with automatic identification of the commutation sequence. Additionally, the IC features protection circuits that monitor the voltage, current and temperature of the system in order to protect against faults.

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