DRV11873 20W, 12V 3-phase sensorless BLDC motor driver | TI.com

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20W, 12V 3-phase sensorless BLDC motor driver


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  • DRV10974  -  The DRV10974 features smaller footprint, 180 sinusoidal control and simple resistor configuration for Lead Angle, Current Limit and Acceleration Profile


DRV11873 is a three-phase, sensorless motor driver with integrated power MOSFETs with drive current capability up to 1.5-A continuous and 2-A peak. DRV11873 is specifically designed for fan motor drive applications with low noise and low external component count. DRV11873 has built-in overcurrent protection with no external current sense resistor needed. The synchronous rectification mode of operation achieves increased efficiency for motor driver applications. DRV11873 outputs FG and RD to indicate motor status with open-drain output. A 150° sensorless BEMF control scheme is implemented for a three-phase motor. DRV11873 is available in the thermally-efficient 16-pin TSSOP package. The operation temperature is specified from –40°C to 125°C.


  • Input Voltage Range: 5 to 16 V
  • Six Integrated MOSFETs With 1.5-A Continuous
    Output Current
  • Total Driver H + L RDSON 450 mΩ
  • Sensorless Proprietary BMEF Control Scheme
  • 150° Commutation
  • Synchronous Rectification PWM Operation
  • FG and RD Open-Drain Output
  • 5-V LDO for External Use up to 20 mA
  • PWMIN Input from 7 to 100 kHz
  • Overcurrent Protection With Adjustable Limit
    Through External Resistor
  • Lock Detection
  • Voltage Surge Protection
  • UVLO
  • Thermal Shutdown


Compare all products in Brushless DC (BLDC) motor drivers Email Download to Excel
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$)
DRV11873 Order now Catalog     Trapezoidal Control     Integrated FET     450     2     5     20     1xPWM     -40 to 85     Rotor Lock Protection
Integrated Motor Control
Integrated FETs
Tach/FG Feedback    
HTSSOP | 16     0.79 | 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
-40 to 125     Buck Step Down Converter
Initial Position Detect (IPD)
Rotor Lock Protection
Integrated Motor Control
Integrated FETs
Tach/FG Feedback    
VQFN | 24    
1.05 | 1ku