12-V, 3-Phase Sensorless BLDC Motor Controller - DRV11873

DRV11873 (ACTIVE)

12-V, 3-Phase Sensorless BLDC Motor Controller

Description

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.

Features

  • 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

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Parametrics Compare all products in 3-Phase Brushless Driver

 
Vs (Min) (V)
Vs (Max) (V)
RMS Output Current (A)
Peak Output Current (A)
RDS(ON) (HS + LS) (mOhms)
# of half-bridges
Control I/F
Additional Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
DRV11873 DRV10983
5     8    
16     28    
1.5     2    
2     3    
450     250    
3     3    
PWM     PWM, Analog, or I2C    
20mA 5V LDO; Rotor Lock Protection     100mA Step Down Buck; Rotor Lock Protection    
Catalog     Catalog    
-40 to 85     -40 to 125    
16HTSSOP     24HTSSOP    
0.79 | 1ku     1.19 | 1ku    
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