Product details

Rating Catalog Control method Trapezoidal Control Architecture Integrated FET Control interface 1xPWM RDS(ON) (HS + LS) (mOhms) 450 Peak output current (A) 2 Vs (Min) (V) 5 Vs ABS (Max) (V) 20 Features Rotor Lock Protection, Integrated Motor Control, Integrated FETs, Tach/FG Feedback Operating temperature range (C) -40 to 85
Rating Catalog Control method Trapezoidal Control Architecture Integrated FET Control interface 1xPWM RDS(ON) (HS + LS) (mOhms) 450 Peak output current (A) 2 Vs (Min) (V) 5 Vs ABS (Max) (V) 20 Features Rotor Lock Protection, Integrated Motor Control, Integrated FETs, Tach/FG Feedback Operating temperature range (C) -40 to 85
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • 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
  • 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

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.

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.

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Technical documentation

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Type Title Date
* Data sheet DRV11873 12-V, 3-Phase, Sensorless BLDC Motor Driver datasheet (Rev. A) 25 Nov 2014
Application note Best Practices for Board Layout of Motor Drivers (Rev. B) 14 Oct 2021
Technical article A basic brushless gate driver design – part 3: integrated vs. discrete half bridges 16 Dec 2020
Technical article Connectivity helps integrate intelligent motor control on a single MCU 06 Jun 2018
Technical article Cut the power and complexity of your appliance designs 06 Feb 2018
Technical article Six weird ways to design with a brushless-DC driver 28 Aug 2017
Application note DRV11873 Lock Detection Functionality 22 Apr 2016
User guide DRV11873 EVM User Manual (Rev. A) 12 Mar 2013

Design & development

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Evaluation board

DRV11873EVM — DRV11873 Evaluation Module for 12V, 3-Phase Sensor-Less BLDC Motor Controller

The DRV11873EVM (evaluation module) provides a cost effective, sensorless-solution for running a 3-phase BLDC motor in 150 degree sinusoidal commutation.
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HTSSOP (PWP) 16 View options

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