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DRV10974 Datenblatt(PDF) 1 Page - Texas Instruments

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Teilenummer DRV10974
Bauteilbeschribung  12-V, Three-Phase, Sensorless BLDC Motor Driver
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Hersteller  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

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DRV10974
180°Sensorless
Sinusoidal
PWM
FG
4.4 V to 18 V
V
M
Copyright © 2017, Texas Instruments Incorporated
FR
Current Limit
Accel Profile
Lead Angle
VCP
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Now
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. ADVANCE INFORMATION for pre-production products; subject to
change without notice.
DRV10974
SLVSDN2 – JANUARY 2018
DRV10974 12-V, Three-Phase, Sensorless BLDC Motor Driver
1
1 Features
1
Input Voltage Range: 4.4 V to 18 V
Phase Drive Current: 1-A Continuous (1.5-A
Peak)
180° Sinusoidal Commutation for Optimal
Acoustic Performance
Lead Angle Configurable With External Resistor
Soft Start and Resistor-Configurable Acceleration
Profile
Built-In Current Sense to Eliminate External
Current-Sense Resistor
No Motor Center Tap Required
Simple User Interface:
One-Pin Configuration for Start-Up
PWM Input Designates Magnitude of Voltage
Applied to Motor
Open-Drain FG Output Provides Speed
Feedback
Pin for Forward and Reverse Control
Fully Protected:
Motor-Lock Detect and Restart
Overcurrent, Short-Circuit, Overtemperature,
Undervoltage
2 Applications
White Goods
Fans, Blowers, and Pumps
BLDC Motor Module
3 Description
The DRV10974 device is a three-phase sensorless
motor driver with integrated power MOSFETs, which
can provide continuous drive current up to 1 A (rms).
The device is designed for cost-sensitive, low-noise,
and low-external-component-count applications.
The DRV10974 device uses a proprietary sensorless-
control scheme to provide dependable commutation.
The
180°
sinusoidal
commutation
significantly
reduces pure tone acoustics that are typical with 120°
(trapezoidal) commutation. The DRV10974 spin-up is
configured using a single external low-power resistor.
The current limit can be set by an external low-power
resistor.
The DRV10974 device provides for simple control of
motor speed by applying a PWM input to control the
magnitude of the drive voltage or by holding PWM
high, varying the supply voltage, and monitoring the
FG pin for speed feedback.
The DRV10974 device includes a number of features
to improve efficiency. The resistor-configurable lead
angle allows the user to optimize the driver efficiency
by aligning the phase current and the phase BEMF.
In addition, the use of low-rDS(on) MOSFETs helps to
conserve power while the motor is being driven.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV10974
HTSSOP (16)
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Application Schematic


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