Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - motor controllers Half-bridge (3) PWM HTSSOP 16

10uF

0.1uF

2.2uF

GND

VCP

CPN

VCC

PWMIN

CPP

COM

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

• Six Integrated MOSFETs With 1.5-A • Voltage Surge Protection

Continuous Output Current

• UVLO

• Total Driver H+L R

DSON

450 mΩ

• Thermal Shutdown

• Sensorless Proprietary BMEF Control Scheme

APPLICATIONS

• 150° Commutation

• Appliance Cooling Fan

• Synchronous Rectification PWM Operation

• Desktop Cooling Fan

• FG and RD Open Drain Output

• Server Cooling Fan

• 5-V LDO for External Use

• PWM

Input 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

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.

Summary of content (16 pages)

PAGE 1
DRV11873 www.ti.com SLWS237 – NOVEMBER 2012 12-V, 3-PHASE, SENSORLESS BLDC MOTOR DRIVER Check for Samples: DRV11873 FEATURES 1 • • • • • • • • • • Input Voltage Range 5 V to 16 V Six Integrated MOSFETs With 1.
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DRV11873 SLWS237 – NOVEMBER 2012 www.ti.com ORDERING INFORMATION (1) PACKAGE (2) TA –40°C to 125°C (1) (2) TSSOP-16 (PWP) Tape and reel, 3000 PART NUMBER TOP-SIDE MARKING DRV11873PWP 11873 For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/package.
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DRV11873 www.ti.com SLWS237 – NOVEMBER 2012 PIN DESIGNATION PWP PACKAGE (TOP VIEW) FS PWMIN FG FR RD CS VCP COM CPP V5 CPN VCC W U GND V Table 1. PIN DESCRIPTIONS TERMINAL NAME NO. I/O (1) DESCRIPTION FS 1 I Motor parameter adjustment pin. Pull low for lower speed motor and pull high for high speed motor. FG 2 O Frequency generator output. The output have period equal to 6 electrical states (FG).
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DRV11873 SLWS237 – NOVEMBER 2012 www.ti.com ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) VALUE MIN Input voltage range Output voltage range Electrostatic discharge (ESD) VCC -0.3 20 CS -0.3 3.6 PWMIN, FS, FR -0.3 6 GND -0.3 0.3 COM -1 20 U, V, W -1 20 FG, RD -0.3 20 VCP -0.3 25 CPN -0.3 20 CPP -0.3 25 V5 -0.
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DRV11873 www.ti.com SLWS237 – NOVEMBER 2012 RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range (unless otherwise noted) Supply voltage MIN MAX VCC Voltage range 5 16 U, V, W -0.7 17 COM -0.1 17 FG, RD -0.1 16 PGND, GND -0.1 0.1 VCP -0.1 22 CPP -0.1 22 CPN -0.1 16 V5 -0.1 5.5 PWMIN, FR, FS -0.1 5.
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DRV11873 SLWS237 – NOVEMBER 2012 www.ti.com RD over recommended operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS IRD-SINK RD pin sink current VRD = 0.3 V IRD-short RD pin short current limit VRD = 12 V MIN TYP MAX 20 25 TYP MAX 5 UNIT mA mA FR and FS over recommended operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS VFR-IH High-level input voltage VCC ≥ 4.5 V VFR-IL Low-level input voltage VCC ≥ 4.
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DRV11873 www.ti.com SLWS237 – NOVEMBER 2012 DETAILED DEVICE 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. It 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.
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DRV11873 SLWS237 – NOVEMBER 2012 www.ti.com REVERSE SPIN CONTROL FR DRV11873 has an FR pin to set the motor for forward or reverse spin. During DRV11873 power up, FR status will be set. During normal operation, the spin direction of the motor will not change if the FR status is changed. The FR status can be reset after the next PWM rising edge if PWMIN was pulled low for 300 µs (when the FS status is high) or 600 µs (when the FS status is low).
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DRV11873 www.ti.com SLWS237 – NOVEMBER 2012 APPLICATION INFORMATION DRV11873 only requires five external components. A 10-µF or higher ceramic capacitor connected to VCC and ground is needed for decoupling. During layout, the strategy of ground copper pour is very important to enhance the thermal performance. For two or more layers, eight thermal vias are needed. Refer to Figure 1 for an example of PCB layout.
PAGE 10
PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 PACKAGING INFORMATION Orderable Device Status (1) DRV11873PWPR ACTIVE Package Type Package Pins Package Drawing Qty HTSSOP PWP 16 2000 Eco Plan Lead/Ball Finish (2) Green (RoHS & no Sb/Br) MSL Peak Temp Op Temp (°C) Top-Side Markings (3) CU NIPDAU Level-2-260C-1 YEAR (4) -40 to 85 11873 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
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PACKAGE MATERIALS INFORMATION www.ti.com 20-Nov-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device DRV11873PWPR Package Package Pins Type Drawing SPQ HTSSOP 2000 PWP 16 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 330.0 12.4 Pack Materials-Page 1 6.9 B0 (mm) K0 (mm) P1 (mm) 5.6 1.6 8.0 W Pin1 (mm) Quadrant 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 20-Nov-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) DRV11873PWPR HTSSOP PWP 16 2000 367.0 367.0 35.
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