Simpler spinning motors with latest stepper technologies
12 January 2016
Texas Instruments enhanced its high-performance stepper motor-driver family with three new devices for 24V stepper motors.
Two devices offer TI’s patented AutoTune technology to eliminate stepper motor tuning and two integrate current sensing to support differentiated 3D printers, robotics, factory automation equipment, currency-counting machines and more.
AutoTune technology on the DRV8880 and DRV8881 devices eliminates the time-consuming, iterative process of manual tuning, saving weeks or even months of design time. This on-chip intelligence dynamically monitors the motor’s performance under varied conditions over its lifetime and adjusts decay settings appropriately. This functionality makes it possible to develop motors that run quietly and efficiently despite changes in motor properties, supply voltage, load and torque.
For motor systems that do not require the stability and longevity benefits of AutoTune technology, designers can take advantage of the new DRV8885 bipolar stepper motor driver with integrated current sensing. TI incorporates a technology that eliminates two external sense resistors to accurately regulate the current to the motor, saving up to 20 percent board space and simplifying routing compared to competing devices.
Tools and support
Designers can speed evaluation and design with the new stepper-motor drivers using the DRV8880EVM, DRV8881EEVM (for phase/enable interface), DRV8881PEVM (for PWM interface) and DRV8885EVM evaluation modules (EVMs). Each EVM features an onboard MSP430 microcontroller, giving designers a cost-effective platform that speeds development and time to market. Each is available for purchase at UK £33.93 via the TI store and authorised distributors.
Learn more or order samples here.
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