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
Whitepaper
Revolutionizing eBike and Personal Mobility Motor Control with the A89212 System on Chip
Maximize eBike range and reliability with the A89212 SoC. Featuring a 90V range, ARM Cortex-M4 core, and -18V transient protection for robust, sensorless FOC motor control.
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.
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
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).
Guide
A5931 Evaluation Board User Guide
This evaluation board is used to demonstrate the Allegro A5931GES three-phase sensorless fan driver IC.
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.
Guide
A89500 Evaluation Board User Guide
This board provides the basic components required to use the A89500 to drive a motor.
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
A3941 Evaluation Board User Guide
The A3941 is a full-bridge controller for use with external N-Channel power MOSFETs designed for automotive applications with high-power inductive loads like brush DC motors.
Application Note
Key Considerations in Design of Sensorless Three-Phase BLDC Motor Driver for Automotive Fuel Pumps
This application note provides details the A89303 device in an automotive fuel pump application. Detailed information about the sensorless control in A89303, advantages of the device, speed control techniques, parameter configuration including efficacy and thermal calculation, EMI consideration, and layout guidelines are presented.
Guide
AMT4952 Evaluation Board User Guide
The AMT49502 evaluation board is designed to aid system designers with evaluating the operation and performance of the Allegro AMT49502 48 V safety automotive, half-bridge MOSFET driver.
Guide
A4915MET Evaluation Board User Guide
This evaluation board is used to demonstrate the Allegro A4915MET three-phase MOSFET driver IC.
Guide
A5947GET Evaluation Board User Guide
This evaluation board is used to demonstrate the Allegro A5947GET three-phase sensorless fan driver IC.
Brochure
Brochure: Automotive BLDC Gate Driver with Integrated FOC Algorithm
Designed for battery cooling fans and HVAC systems in EV and hybrid vehicles, the A89307 offers ultra-low noise and vibration by using a Field Oriented Control (FOC) algorithm to drive continuous sinusoidal current to the load, helping automakers reduce noise and improve battery life.
Technical Article
Efficient and Reliable Solutions to Meet New Emission Standards in Two-Wheelers
P0255: This article discusses the challenges that two-wheeler designers face when switching to an EFI system, notably a 100 ms fast startup requirement.