DRV10974

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12-V nominal, 2.5-A peak sensorless sinusoidal control 3-phase BLDC motor driver

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Product details

Parameters

Rating Catalog Control method Sinusoidal Control Architecture Integrated FET Control interface 1xPWM, Analog RDS(ON) (HS + LS) (mOhms) 750 Peak output current (A) 2.5 Vs (Min) (V) 4.4 Vs ABS (Max) (V) 20 Features Self-tuning, Rotor Lock Protection, Integrated Motor Control, Integrated FETs, Tach/FG Feedback Operating temperature range (C) -40 to 125 open-in-new Find other Brushless DC (BLDC) motor drivers

Package | Pins | Size

HTSSOP (PWP) 16 32 mm² 5 x 6.4 WQFN (RUM) 16 16 mm² 4 x 4 open-in-new Find other Brushless DC (BLDC) motor drivers

Features

  • Input Voltage Range: 4.4 V to 18 V
  • Total Driver H + L rDS(on): 750 mΩ (Typical) at TA = 25°C
  • Phase Drive Current: 1-A Continuous (1.5-A Peak)
  • 180° Sinusoidal Commutation for Optimal Acoustic Performance
  • Resistor-Configurable Lead Angle
  • Resistor-Configurable Current Limit
  • Soft Start With Resistor-Configurable Acceleration Profile
  • Built-In Current Sense to Eliminate External Current-Sense Resistor
  • Proprietary Sensorless Control Without Motor Center Tap
  • 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

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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 driving the PWM pin with an analog 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.

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Technical documentation

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Type Title Date
* Data sheet DRV10974 12-V, Three-Phase, Sensorless BLDC Motor Driver datasheet (Rev. E) Mar. 04, 2021
Technical article A basic brushless gate driver design – part 3: integrated vs. discrete half bridges Dec. 16, 2020
Application note Best Practices for Board Layout of Motor Drivers (Rev. A) Jan. 22, 2019
User guide DRV10974 Evaluation Module User's Guide (Rev. C) Aug. 16, 2018
Technical article Connectivity helps integrate intelligent motor control on a single MCU Jun. 06, 2018
User guide DRV10974 Tuning Guide Apr. 11, 2018
Technical article Cut the power and complexity of your appliance designs Feb. 06, 2018
Technical article Six weird ways to design with a brushless-DC driver Aug. 28, 2017
Application note Tuning Lead Angle in DRV10x Sensorless BLDC Drivers Oct. 09, 2012

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Reference designs

REFERENCE DESIGNS Download
22-mm Diameter and Thermally Enhanced Three-Phase BLDC Motor Driver Reference Design
TIDA-01619 The TIDA-01619 provides a three-phase brushless DC (BLDC) motor driver solution for systems that have operating range from 4.4 V to 18 V.

This design features the DRV10974 motor driver with the ability to add MCU for closed loop speed control. The DRV10974 offers sensorless commutation with no need (...)

document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 16 View options
WQFN (RUM) 16 View options

Ordering & quality

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