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Application Note

Enhancements to Slide-By Detection with Linear Sensors

AN296200 - This application note presents a modified solution to magnetic sensing in long stroke applications. Through the incorporation of a microcontroller, a lower cost solution can be realized with fewer linear sensors than previously existing arc tangent solutions.

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

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

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.

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.

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.

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.

Guide

Hall-Effect IC Applications Guide

Allegro MicroSystems uses the latest integrated circuit technology in combination with the century-old Hall effect to produce Hall-effect ICs. These are contactless, magnetically activated switches and sensor ICs with the potential to simplify and improve electrical and mechanical systems.

Application Note

Guidelines for Using Allegro Angular Sensors

Many applications in different industries, such as in industrial automation and automotive sensors and actuators, require monitoring the angle of a rotating shaft either in an on-axis or off-axis arrangement. This application note is dedicated to a review of on-axis magnetic applications.

Technical Article

Integrating Hall-Effect Magnetic Sensing Technology into Modern Household Appliances

As technology improves, Hall-effect sensor ICs are finding their way into many modern household appliances. The Hall effect refers to the measurable voltage that appears across a conductive material.

Application Note

Micro-Power Position Sensing in Cell Phone Applications New

This note will show how to use the Allegro™ A1171 in a standard flip or slide phone, as well as techniques for sensing three positions using only one magnet and one Hall device in a multipurpose application.

Application Note

Latching Switch Hall-Effect IC Basics

There are four general categories of Hall-effect IC devices that provide a digital output: unipolar switches, bipolar switches, omnipolar switches, and latches. Latching Hall-effect sensor ICs, often referred to as "latches," are digital output Hall-effect switches that latch output states.

Application Note

Position and Level Sensing Using Hall-Effect Sensing Technology

This paper introduces Hall-effect technology, then explores how it has been applied, in particular, differentiating between the primary types of Hall sensor ICs and the highly differentiated range of sensing behaviors they can support.

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.

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

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

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

Estimating Maximum MOSFET Switching Frequency

AN296216 - This application note describes how to calculate the maximum power MOSFET switching frequency in BLDC motor gate drives.

Technical Article

Advanced Algorithm Minimizes Stepper Motor Noise and Vibration in Precision Motion Control Applications

Stepper motors offer unique advantages over direct current (DC) and brushless DC (BLDC) motors in many applications. A bipolar stepper provides accurate open-loop position as well as zero-speed torque without using a control loop or external sensors.