Low-voltage motor drivers reduce power consumption up to 80% percent

Low-voltage motor drivers reduce power consumption up to 80% percent

Texas Instruments Inc. has expanded its portfolio of highly integrated DRV8x motor drivers with three new low-voltage devices for brushed dc and stepper motors. The DRV8834, DRV8835, and DRV8836 motor drivers provide a wide, low-voltage operating range, low RDS(ON) and ultra-low sleep currents, slashing power consumption as much as 80% compared to other options to extend battery life, improve thermal performance, and increase system reliability. The devices are also housed in an ultra-small package, reducing board space by as much as 95 % compared to discrete implementations.

Key features and benefits:

  • Ultra-smooth motion profiles: On-chip 32-step microstepping indexer and advanced motion control features on the DRV8834 minimize torque ripple for quiet, ultra-smooth motion in applications such as security video cameras, medical, and office automation equipment.
  • Extended battery life: Low RDS(ON) of 305 milliohms and an ultra-low sleep current as low as 10 nA improves thermal performance and extends battery life in applications such as toys, e-locks, cameras, point-of-sale printers, and smart meters.
  • Drop in and spin: High level of integration, such as an on-chip indexer and current control loops, provides greater intelligence to reduce design complexity while minimizing microcontroller (MCU) MIPS requirements and software development, speeding time to market compared to discrete solutions.
  • Reduced board space: Tiny 2 x 3-mm package option for the DRV8835 and DRV8836.
  • Advanced on-chip protection: Over-current, over-temperature, shoot-through, and under-voltage lock-out increase system reliability and manufacturing yields.
DRV8x motor drivers integrate many of the functional blocks needed in a motor system, such as gate drive circuitry, MOSFETs, protection circuitry, and current regulation circuitry. DRV8x motor drivers make it easy to drive a wide range of stepper, brushed DC, and brushless DC motors in portable and wired applications such as printers, video surveillance, fans, pumps, valves, power tools, textile manufacturing machines, e-locks, and consumer electronics.

For more information, contact Texas Instruments Inc., 12500 TI Blvd., Dallas, TX 75243. Phone: (972) 644-5580.

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