Brushless DC Drivers
QuietMotion™ - precision motor control for whisper-quiet performance.
Allegro’s brushless DC motor drivers combine decades of motion control expertise with advanced integration to accelerate development and performance. Supporting up to100 V systems, our portfolio includes integrated or external gate driver ICs tailored for automotive, industrial, and consumer applications. With ISO 26262-compliant options, embedded QuietMotion™ algorithms, and industry-leading ASIL D support, we deliver compact, precise, and safety-ready solutions for high-efficiency motor control.
Documentation & Resources
Application Note
AMT49100 Start-Up Sequence
This application note is intended to provide user guidelines for the recommended power-up sequence to ensure a robust and reliable start-up when using the Allegro AMT49100 gate driver.
Application Note
Microstepping Motor-Driver IC with Integrated Step and Direction Translator Interface
A new series of microstepping motor driver integrated circuits with an integrated step and direction translator interface has been developed specifically by to drive bipolar stepper motors. These new ICs incorporate several unique design features, including automatic mixed-mode current decay control.
Brochure
Innovative Motor Control
With decades of experience, our embedded motion control algorithms in our motor driver ICs simplify designs while improving motor performance and time to market. Download brochure to learn more.
Whitepaper
Innovative FOC Motor Control: Improve Time to Market by Eliminating Software Development
This paper will focus on the basics of the sensorless control algorithm, the advantages of different sensing techniques, and how the GUI can drive a full-featured sensorless sinusoidal BLDC motor with no software programming required.
Application Note
Improving Batwing Power Dissipation
AN295015 - Allegro MicroSystems’ stepper motor ICs are power ICs encapsulated in DIP (dual in-line), SOIC (small outline integrated circuit), and PLCC (plastic leaded chip carrier) packages. The silicon die is directly bonded to a heat-spreading lead frame (batwing).
Brochure
Brochure: Full-Bridge Gate Drivers for Automotive and Industrial Applications
The solid-state A89505 and A89506 are designed for a range of vehicle applications, including various actuators, EV charger locks, electronic parking brakes, and folding mirrors.
Application Note
Driving Inductive Loads
This application note outlines common techniques and challenges in the employment of a single half-bridge driver configuration to control current in a simple two-terminal inductive load.
Brochure
A Scalable Approach to Power Tool Designs
Achieve all of your design goals for voltage and power levels with a single-platform architecture by combining Allegro drivers, sensors, and regulators.
Application Note
Accurate Startup Techniques in a Sensorless Field-Oriented-Control BLDC (Sinusoidal) Motor Driver
AN296259 - This application note presents various startup techniques available for use with the AMT49406 device.
Application Note
Bootstrap Supply and Circuit Guidelines
This application note describes the operation of the bootstrap circuit and guidelines in selecting a bootstrap capacitance value to ensure normal operation of the gate drives.
Brochure
Brochure: Driving EV Powertrains
With the industry’s largest portfolio of grade 0, 80V motor drivers, Allegro’s suite of fully integrated gate drivers effectively address the critical need for efficient, flexible, reliable solutions for your hybrid and electric vehicles (EV).
Guide
A89332-3 Evaluation Board User Guide
The A89332-3 evaluation board is designed to aid users in evaluating the operation and performance of the A89332-3 motor-controller integrated circuit (IC).
Guide
A4915MET Evaluation Board User Guide
This evaluation board is used to demonstrate the Allegro A4915MET three-phase MOSFET driver IC.
Guide
A5932GES Evaluation Board User Guide
This evaluation board is used to demonstrate the Allegro A5932GES Three-Phase Sinusoidal Sensorless fan controller IC.
Guide
A4955 Evaluation Board User Guide
This evaluation board is used to demonstrate the Allegro A4955GES full-bridge PWM gate driver IC.