DRV10974 12W, 12V 3-phase sensorless BLDC motor driver | TI.com

DRV10974
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12W, 12V 3-phase sensorless BLDC motor driver

 

Description

The DRV10974 device is a three-phase sensorless motor driver with integrated power MOSFETs, which can provide continuous drive current up to 1 A (rms). The device is designed for cost-sensitive, low-noise, and low-external-component-count applications.

The DRV10974 device uses a proprietary sensorless control scheme to provide dependable commutation. The 180° sinusoidal commutation significantly reduces pure tone acoustics that are typical with 120° (trapezoidal) commutation. The DRV10974 spin-up is configured using a single external low-power resistor. The current limit can be set by an external low-power resistor.

The DRV10974 device provides for simple control of motor speed by applying a PWM input to control the magnitude of the drive voltage, or by driving the PWM pin with an analog voltage and monitoring the FG pin for speed feedback.

The DRV10974 device includes a number of features to improve efficiency. The resistor-configurable lead angle allows the user to optimize the driver efficiency by aligning the phase current and the phase BEMF. In addition, the use of low-rDS(on) MOSFETs helps to conserve power while the motor is being driven.

Features

  • Input Voltage Range: 4.4 V to 18 V
  • Total Driver H + L rDS(on): 750 mΩ (Typical) at TA = 25°C
  • Phase Drive Current: 1-A Continuous (1.5-A Peak)
  • 180° Sinusoidal Commutation for Optimal Acoustic Performance
  • Resistor-Configurable Lead Angle
  • Resistor-Configurable Current Limit
  • Soft Start With 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 Magnitude of Voltage Applied to 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

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Parametrics

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Part number Order Rating Control method Architecture RDS(ON) (HS + LS) (mOhms) Peak output current (A) Vs (Min) (V) Vs ABS (Max) (V) Control I/F Operating temperature range (C) Features Package Group Approx. price (US$)
DRV10974 Order now Catalog     Sinusoidal Control     Integrated FET     750     2.5     4.4     20     1xPWM
Analog    
-40 to 125     Self-tuning
Rotor Lock Protection
Integrated Motor Control
Integrated FETs
Tach/FG Feedback    
HTSSOP | 16
WQFN | 16    
0.95 | 1ku    
DRV10970 Order now Catalog     Sinusoidal Control
Trapezoidal Control    
Integrated FET     400     3     5     20     1xPWM     -40 to 125     Adaptive Drive Angle Adjustment (ADAA)
Hall Element Comparators
Integrated Motor Control
Integrated FETs
Tach/FG Feedback    
HTSSOP | 24     0.85 | 1ku    
DRV10975 Order now Catalog     Sinusoidal Control     Integrated FET     250     3     6.5     23     1xPWM
Analog
Serial    
-40 to 125     Buck Step Down Converter
Initial Position Detect (IPD)
Rotor Lock Protection
SPI/I2C
Integrated Motor Control
Integrated FETs
Tach/FG Feedback    
HTSSOP | 24
VQFN | 24    
1.05 | 1ku