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TI Expands Motor Driver Portfolio With Its First Integrated Stepper Motor Pre-driver





DALLAS, Sept. 9, 2013 /PRNewswire/ -- Texas Instruments (TI) (NASDAQ: TXN) today expanded its motor driver portfolio to include the company's first integrated stepper motor pre-driver. The DRV8711 is highly configurable with a best-in-class on-chip micro-stepping indexer, as well as stall detection, and advanced current regulation that easily and efficiently tunes any motor. External MOSFETs control the stepper motor to provide minimum heat dissipation and 20-percent more scalable output current than the nearest competitor, allowing designers to customize their design. The stepper motor pre-driver is designed for industrial applications, including textile machinery, video surveillance, ATM machines, robotics, office automation equipment and stage lighting.  For more information or to place an order, visit www.ti.com/drv8711-pr.

Key features and benefits of the DRV8711 :

  • Customizable driver stage: Gate drive supports up to 200 mA of source current per 400 mA of sink current with adjustable slew rate, dead-time and on-time to accommodate application requirements. The device drives external N-channel MOSFETs with a built-in charge pump to provide more design options and a cost-effective solution.
  • Smooth motion profile for higher performance: Spins a stepper motor with an integrated micro-stepping indexer capable of up to 1/256 micro-stepping. Adaptive blanking time and various current decay modes, including slow, fast, mixed and auto-mixed decay, achieve a smooth profile to optimize motor performance.
  • Internal and external stall-detect feature: Designers can easily detect stall conditions through internal stall detection, or process the optional back electromotive force (BEMF) output to detect stall conditions and take corrective action through the external controller. This allows the designer to minimize a disturbance from a motor stall.
  • Easy to use and highly configurable: SPI interface allows the customer to program the output current, micro-stepping mode, current decay mode and stall detection to reduce system complexity and simplify design compared to similar devices.
  • Robust, reliable and protected : The DRV8711's protection against motor over-current, pre-driver over-current, over temperature and under voltage fault conditions provides system protection, and enables system reliability and system robustness.




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