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
Guide
A89224 Evaluation Board User Guide
The A89224 evaluation board is a high-performance processor with integrated three-phase gate driver and precision current-sense capability.
Whitepaper
Why 48V is Revolutionizing Robotics
Robotics is evolving at an incredible pace, with industrial automation demanding more powerful and efficient machines. This shift is driving a significant change in the electronics that power them, moving away from traditional 12V systems towards higher operating voltages, particularly 48V.
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.
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.
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.
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.
Application Note
Motor Drive Discrete MOSFET Bridge Circuit Design and Layout
AN296215 - This application note is intended to familiarize the reader with bridge circuit switching for motor drive applications. Recommendations for circuit design and layout to mitigate EMI and switching transients are provided.
Guide
A89500 Evaluation Board User Guide
This board provides the basic components required to use the A89500 to drive a motor.
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.
Whitepaper
Power Smarter Tools with the A89212 SoC
Discover how Allegro’s A89212 Motor Control SoC enables faster, more efficient cordless tool designs—across drills, saws, e-bikes, and more.
Guide
A4955 Evaluation Board User Guide
This evaluation board is used to demonstrate the Allegro A4955GES full-bridge PWM gate driver IC.
Guide
A4950 Evaluation Board User Guide
This evaluation board is used to demonstrate the Allegro A4950xLJ full-bridge DMOS PWM motor driver IC.
Guide
A5931 Evaluation Board User Guide
This evaluation board is used to demonstrate the Allegro A5931GES three-phase sensorless fan driver IC.
Guide
APEK89211 and APEK89212 Evaluation Board User Guide
The A89211 or A89212 (A89211/2) evaluation board is a high performance processor with integrated three-phase gate driver and precision current-sense capability.