Motor Drivers
Drive Innovation with Safe, Robust and Reliable Motor Drive Solutions
Allegro motor drivers offer industry-leading robustness and safety, thriving in harsh, high voltage environments where competing parts fail.
But while our drivers are tough, they're also quiet. We are experts in helping our customers make their motors run more quietly, efficiently and reliably in automotive, industrial and consumer applications. And thanks to our decades of experience in motor control, we have developed embedded motion control algorithms that simplify designs while improving your motor performance and time to market.
Browse by category
Brushless DC Drivers
Covering a wide range of power systems, our integrated MOSFET and Gate Driver ICs thrive in automotive, industrial, and consumer applications, ranging from 3.5V to 100V operating voltage.
Brush DC Drivers
We offer a broad portfolio of safe and robust brush DC and stepper motor solutions. With both integrated and MOSFET gate drives, our product lines are ideal for low- and high-power applications alike.
Isolated Gate Drivers
Highly innovative isolation boundary enables leading market leading electrical efficiency and up to 50% smaller than competitive solutions.
Stepper Motor Drivers
We offer a complete lineup of safe and robust stepper motor drivers for office automation, industrial, and automotive applications.
Safety Motor Drivers
Our diverse portfolio of automotive-grade motor drivers are engineered with advanced safety features and ISO 26262 compliance. From 3-phase to full and half-bridge solutions, our drivers deliver reliable performance in critical systems.
Documentation & Resources
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.
Technical Article
Common Driver Platform for 12V and 48V Systems Simplifies EV Starter Generator Designs
This article discusses how using a common platform for both 12V and 48V starter generator systems will simplify and ease the transition to 48V solutions, as the electrical revolution continues to transform the automotive industry.
Technical Article
Sensorless and Always Without Reverse Rotation: Rapid and Accurate Startup for Blower Fan Motors
How initial rotor position detection techniques can overcome torque generation challenges to provide anti-reverse, fast, sensorless startup.
Technical Article
Reduce Design Time by Simplifying Code Development in Ceiling Fan Applications.
P0244: This article highlights how existing code-free field-oriented-control (FOC) sensorless BLDC motor controllers solve the challenges of ceiling fan applications.
Application Note
AMT49100 & AMT49101: How to Enable / Disable the Buck Regulator
AN296217 - This application note describes how to switch between buck enabled and buck disabled operation on any variant of the AMT49100 or AMT49101 gate diver family.
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Technical Article
Hall-Based BLDC Gate Drive Saves Microprocessor IO and Provides Zero Speed Torque
P0127: Many BLDC motor applications require Hall-based position sensing to accommodate direction changes quickly and provide holding torque.. Allegro gate driver ICs with integrated Hall commutation are designed with the Hall-based commutation engine integrated into the IC.
Technical Article
Single Gate Driver Design Enables Wide Range of Battery Voltages for Various Motor Power Levels
P0239 - This article discusses the challenges of trying to accommodate wide-ranging battery voltages and motor powers in a single driver design.
Technical Article
Modern Motor Drivers Enable a Common Platform for Power Tool Designs
Our brushless DC motor drivers help you design a common platform to address both high power and lower power designs. We integrate functions to allow for a single-platform approach, reducing engineering development cycles and improving time to market.
Technical Article
Single-Platform Design Can Reduce the Cost of Research and Development for Cordless Power Tools
P0193 - Power Tool engineers are duplicating resources with current product designs as they often use different motor drivers, manufacturers, design layouts for each product variation. This article reviews options to utilize a single platform in a wide array of applications – saving design time and complexity, improving time-to-market, and reducing overall cost.
Technical Article
Integrated Power Loss Brake Features Lower Energy Consumption and Reduce Costs in Data-Center Fan Applications
Service interruptions of servers can result in adverse scenarios including inefficient airflows created by fan blades that have lost power to maintenance in the presence of fan blades. This article introduces power loss brake (PLB) functionality and how lost power can be harnessed to improve efficiency while simplifying fan design.
Brochure
Brochure: Code-Free Gate Drivers for Data-Center Cooling Fans
Our portfolio of three-phase BLDC motor drivers includes solutions with integrated MOSFETs or gate drivers, as well as options for power loss braking for high efficiency.
Video
A4915 Demo Board Video
The Allegro A4915 Three-Phase MOSFET Driver’s innovative speed input and fully integrated block commutation delivers simple speed control of a BLDC motor with a single analog voltage.
Video
A4915 Product Overview Video
The Allegro A4915 Three-Phase MOSFET Driver’s innovative speed input and fully integrated block commutation delivers simple speed control of a BLDC motor with a single analog voltage.
Technical Article
Racing to Meet the Challenges of Electrification
Governments around the world, including the European Union and the United States, have placed mandatory fuel economy standards on combustion engines to reduce emissions. These initiatives will require innovative advances in technologies, driving the demand for increased efficiencies.