Allegro 電流センサー

Application Note

A17820 End-of-Line Calibration New

Designed to support rotary and shot-linear-stroke applications, the A17820 features advanced end-of-line calibration and digital compensations that accurately solve the electrical angle.

Whitepaper

Powering the Future of Data Center Cooling

How advanced motor-control architectures enable next-generation air, hybrid, and liquid cooling systems.

Technical Article

External Transformer Design Guidelines for AHV85003 and AHV85043 Self-Powered Isolated SIC Driver Chipset

Guide

APS11900 Programming Guide

This document describes two approaches to programming the APS11900 and should be used as a companion to the product datasheet.

Guide

Using Allegro ASEK-30 with ACS37610 Samples Programmer

Allegro provides tools to assist in the evaluation of its sensor products. This document provides information to establish the interface between the supported programming tools and the ACS37610 current sensor.

Brochure

Empowering the Renewable Grid - Driving Efficiency, Reliability, and Density in Solar String Inverters

The global transition to renewable energy is placing solar string inverters at the center of the modern grid.

Whitepaper

Advanced Joint Architectures for Next-Generation Robotics New

This white paper explores the intricate world of robotic joint architecture, from the various types of robots and their joint complexities to the crucial role of integrated circuits (ICs) in controlling and driving these joints.

Whitepaper

Maximizing Power Density in Automotive DC/DC Converters New

Automotive power electronics face space constraints requiring 3.6 kW/L power densities. Current commercial systems average only 1.2 kW/L, creating a significant performance gap.

Guide

A33110, A33115, Programming Subkit Quick-Start User Guide

This quick-start guide describes the equipment recommended to evaluate the A33110 (A33115) device.

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

Meet the Power Demands of Tomorrow's Data Centers

How advanced magnetic current sensing and isolated gate-driver technologies unlock higher power density and system reliability.

Technical Article

AHV85003 and AHV85043 Chipset Secondary-Side Snubbers For Improved CMTI Performance

Technical Article

Allegro Sets New Standard for Efficiency in High-Power Systems with Ultra-Low-Loss Isolated Current Sensor

Application Note

A17810 End-of-Line Calibration

AN296324 - The A17810 is a high-precision inductive dual-angle position sensor interface IC designed for steering-torque applications.

Technical Article

How Speed Sensors are Making Two-Wheelers Smarter and Safer

Two-wheelers have established themselves as a fundamental means of transportation throughout the world, being a lower-cost and smaller alternative to the automobile while maintaining freedom and independence compared to public transportation.

Technical Article

Is Your Current Sensing Architecture the Weak Link in Your Steering System

Engineers developing Electric Power Steering (EPS) systems must deliver instantaneous and precise motor control to support modern ADAS and steer-by-wire architectures. A critical architectural decision often overlooked early in the design process is the choice of current sensing methodology.

Application Note

Enhancing Personal-Mobility Safety with a Robust Side Stand Using Hall-Effect Sensing New

AN296394 - This application note focuses on the side-stand detection system, a critical safety feature in personal mobility, and demonstrates the feasibility of replacing common rare-earth magnets with lower-cost, supply-chain-resilient ferrite magnets.

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.

Brochure

Robust and Efficient UPS Solutions Powered by Allegro

In today's interconnected world, reliable power is paramount for businesses of all sizes.

Brochure

Brochure: Solar Energy Harvesting

Allegro’s current sensor ICs are ideal for use with solar applications, which include electronic subsystems like solar combiner boxes, DC/DC converters for maximum power point tracking (MPPT), and DC-AC inverters.

Application Note

Convenient and Isolated Power Measurements via SPI or I2C using ACS71020 or ACS37800 Power Monitoring ICs

AN296180 - This application note describes the I2C and SPI interfaces on the ACS71020/ACS37800 Power Monitoring ICs from Allegro MicroSystems.

Application Note

A1337/A1338 System Timing

AN296138 - The A1337 and A1338 are high-speed high-accuracy magnetic angle sensor ICs, ideal for motor position sensing. This application note provides a brief description of the internal signal processing delays of the A1337 and A1338 angle sensors.

Guide

A Complete Guide to Datasheets

Communications is an important part of engineering and “communications” implies clarity and understanding. The paper (or electronic) data sheet is the important communications link between individuals or companies with diametrically different needs, i.e., between the seller and the buyer.

Application Note

Overcurrent Fault Detection Using ACS37610 Coreless Current Sensor

AN269241 - This application note explains how the Overcurrent-Fault (OCF) feature of Allegro ACS37610 device can be used in application to reliably detect overcurrent conditions and how it can be configured to optimize accuracy and cover different application needs.

Application Note

A31315 Slide-By Introductory Application Guide

AN296189 - The A31315 is a multi-axis Halleffect sensor with advanced integrated signal processing capabilities that simplifies the numerous design challenges that the systems designer faces.

Application Note

Thermal Design for Plastic Integrated Circuits

Proper thermal design is essential for reliable operation of many electronic circuits. Under severe thermal stress, leakage currents increase, materials decompose, and components drift in value or fail. Present-day linear integrated circuits are capable of delivering 5 to 10 watts of continuous power.

Application Note

Side-Shaft Positioning of Magnetic Angle Sensors

AN296179 - If a magnetic angle sensor is used in a side-shaft application with a diametral magnet, the sensor angle output is typically non-linear. Take a look at the two ways this issue can be addressed and the empiric formula to calculate the best possible side-shaft sensor position(s) to obtain a linear sensor output.

Application Note

Package Thermal Characteristics

This document provides test information about the standard packages offered by Allegro MicroSystems. The data given is intended as a general reference only and is based on certain simplifications such as constant chip size and standard bonding methods.

Application Note

Packaging Designators

This document provides reference information as an aid to differentiating the device package types used by Allegro™ MicroSystems. It provides cross-references to the package designation, an Allegro code that is integrated into the device part number:

Application Note

Output Protocols for Angle and Linear Position Sensors

AN296191 - This application note describes working principles, lists advantages and limitations, outlines communication rates/delays, and defines error reporting tactics for digital and analog protocols used in angle and linear position sensing.

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.

Application Note

I2C Addressing and Fault Monitoring Using The ACS71020 or ACS37800 Power Monitoring IC Digital Input Output Pins

AN296172 - This application note describes methods of setting the I2C slave address of the ACS71020/ACS37800 and the added functionality of the digital input-output (DIO) pins when operating in I2C mode.

Guide

IC Outputs - Terms and Definitions

All the outputs described here can be categorized as either bipolar or unipolar. Figures 1 and 2 show the hierarchy in these two families. A given output can be described using any of the names that apply to it; care should be exercised to select the most descriptive name.

Application Note

Hysteresis Offset Error In Hall-Effect Current Sensors Using Soft Ferromagnetic Concentrator Cores

AN296182 - When measuring busbar current with a surrounding soft ferromagnetic concentrator cores, Allegro recommends using a linear IC, such as the A1365, A1367, or ACS70310, in conjunction with a ferromagnetic core for high-current measurement (above 200 A).