Quay lại Texas Instruments

Texas Instruments DRV10974 3-Phase Sensorless Motor Driver

Texas Instruments DRV10974 3-Phase Sensorless Motor Driver comes with integrated power MOSFETs, providing continuous drive current up to 1A (rms). The device is designed for cost-sensitive, low-noise, and low-external-component-count applications. The DRV10974 uses a proprietary sensorless control scheme to provide dependable commutation. The 180° sinusoidal commutation significantly reduces pure tone acoustics, typical with 120° (trapezoidal) commutation. The DRV10974 spin-up is configured using a single external low-power resistor. An external low-power resistor can set the current limit. The Texas Instruments DRV10974 device provides simple motor speed control by applying a PWM input to control the magnitude of the drive voltage. It can also be done by driving the PWM pin with an analog voltage and monitoring the FG pin for speed feedback.

Features

  • 4.4V to 18V input voltage range 
  • Total driver H + L rDS(on) 750mΩ (Typical) at TA = 25°C
  • 1A continuous (1.5A peak) phase drive current 
  • 180° sinusoidal commutation for optimal acoustic performance
  • Resistor-configurable lead angle
  • Resistor-configurable current limit
  • Soft start with a resistor-configurable acceleration profile
  • Built-in current sense to eliminate external current-sense resistor
  • Proprietary sensorless control without motor center tap
  • Simple user interface
    • One-pin configuration for start-up
    • PWM input designates the magnitude of voltage applied to the motor
    • Open-drain FG output provides speed feedback
    • Pin for forward and reverse control
  • Fully protected
    • Motor-lock detect and restart
    • Overcurrent, short-circuit, overtemperature, undervoltage

Applications

  • White Goods
  • Fans, blowers, and pumps
  • BLDC motor module

Application Schematic

Schematic - Texas Instruments DRV10974 3-Phase Sensorless Motor Driver
Đã phát hành: 2018-06-04 | Đã cập nhật: 2023-02-09