Datasheet > DRV11873_14

DRV11873_14

更新时间： 2024-09-10 02:58:27

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
16页	844K
描述
12-V, 3-Phase, Sensorless BLDC Motor Driver

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DRV11873_14 数据手册

DRV11873

www.ti.com

SLWS237 –NOVEMBER 2012

12-V, 3-PHASE, SENSORLESS BLDC MOTOR DRIVER

Check for Samples: DRV11873

FEATURES

•

Input Voltage Range 5 V to 16 V

•

Lock Detection

Voltage Surge Protection

UVLO

•

Six Integrated MOSFETs With 1.5-A

Continuous Output Current

•

Total Driver H+L R_DSON450 mΩ

Sensorless Proprietary BMEF Control Scheme

150° Commutation

Thermal Shutdown

APPLICATIONS

•

Appliance Cooling Fan

Desktop Cooling Fan

Server Cooling Fan

Synchronous Rectification PWM Operation

FG and RD Open Drain Output

5-V LDO for External Use

PWM_INInput From 15 kHz to 100 kHz

Over Current Protection With Adjustable Limit

Through External Resistor

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 low noise and low external

component count fan motor drive applications. DRV11873 has built in over current 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.

TYPICAL APPLICATION

PWMIN

COM

VCP

CPP

CPN

2.2uF

0.1uF

VCC

10uF

GND

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...16

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