On-Demand Webinar: Maximizing System Performance with Intelligent Motor Drivers
Register and gain insights on high-level system architecture to drive BLDC motors and more.
Brushless DC Drivers (BLDC)
With decades of motor control experience, our technology enables customers to address demanding market challenges, achieving cost-optimized systems and improved time to market, all while maintaining a high standard of quality.
Covering a wide range of power systems, our integrated MOSFET and gate driver ICs thrive in automotive, industrial, and consumer applications, ranging from 3.5 to 100 V operating voltage.
Offering products developed to ISO 26262 standards, we help customers like you to meet new safety-critical requirements.
Allegro Advantage
- ASIL Safety Motor Drivers – Industry-leading ASIL D gate driver portfolio
- Code-Free Integrated Motion Control – QuietMotion embedded algorithms, no software needed
- Robustness and Reliability – High integration, smaller footprint packages enable smaller motors
Featured Products
A89301
Ultra-Quiet, Code-Free, FOC Sensorless BLDC Motor Controller
A89303
Sensorless 3-phase motor driver for low power automotive fuel delivery systems
A89307
QuietMotion BLDC Gate Driver with Integrated FOC for Automotive Fans and Pumps
A89224
90V Automotive Three-phase Motor Driver with Integrated ARM Cortex Processor
Motor Driver Selection Guide
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
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.
Technical Article
Overcoming Battery Cooling Challenges to Enable Safe and Reliable Electric Two-Wheelers
P0276: This article discusses options available in battery technology, commonly used battery cooling methods, requirements and challenges associated with cooling methods, and motor drivers that overcome these challenges.