Allegro 電流センサー

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

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

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.

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).

Application Note

Guidelines for Designing a Busbar with Notch for Allegro's ACS37612 Differential Coreless Current Sensor

AN296188 - This application note offers guidelines for achieving optimum busbar and notch designs using the Allegro ACS37612 coreless current sensor

Application Note

Understanding Linearity Error for the ACS70310 Above 2000 G

AN296206 - The goal of this application note is to illustrate and discuss the linearity error of the ACS70310 when sensing fields greater than 2000 G.

Application Note

Mitigating Interference while Measuring High Frequency, High Current Transient Responses

AN296155 - This application note will demonstrate techniques on how to avoid coupling the field from high-current transients onto the signal and power lines of current sensors in order to avoid a perceived distortion of the output.

Application Note

Managing External Magnetic Field Interference When Using ACS71x Current Sensor ICs

AN26030 - In applications where large magnetic fields may be present, care must be taken in the alignment and spacing of the Hall element relative to those fields.

Application Note

ACS37600 Reference PCB Design for Current Sensing Module Applications

AN296205 - The aim of this document is to provide guidelines for designing a PCB for the ACS37600 while minimizing possible undershoots/overshoots due to a fast current step response.

Brochure

Brochure: Current Sensing for Vehicle Electrification

Charge into the future of vehicle electrification with the world's #1 supplier of current sensor ICs for leading EV applications.

Application Note

AN295045- Recent Trends in Hall-Effect Current Sensing

This paper presents recent advances in integrated Halleffect–based current sensor ICs. It covers the various packaging concepts for integrating the primary current path into the system, the major improvements in IC parameters, as well as a few examples of typical application circuits for uninterruptible power supplies (UPS), inverters, and battery monitoring.

Application Note

Vias-in-Pad Improves Thermal Performance for Allegro Current Sensors

This application note discusses the effectiveness of using vias-in-pad and other additional printed circuit board (PCB) layout techniques to improve heat dissipation for current sensors with integrated conductors.

Application Note

Current Sensing in Motor Drives

One of the more popular uses of the current sensor is the broad application of motor drives. Motors are electro-mechanical systems, converting electrical energy (voltage and current) into mechanical energy (torque and speed).

Blog

Beyond the Datasheet: Mastering Current Sensing Selection​

Master current sensor selection with expert guidance on technology trade-offs to design safer, more efficient, dependable solutions.

Technical Article

Rethink PCB Current Sensing

This article will discuss two new innovative approaches to measure currents up to 600 A in PCB: a near-lossless Hall-based current sensor with an integrated conductor and a non-invasive standalone core-free and shield-free differential Hall current sensor.

Technical Article

Breaking the Density Barrier: A Technical Deep Dive into Simplified SiC Gate Drive

Learn how Power-Thru™ isolated SiC gate drivers eliminate the need for bulky external bias supplies, drastically reducing BOM count and PCB size by up to 50%. Solve EMI and power density challenges in your next high-voltage design.

Technical Article

New 400 kHz Current Sensors Enable More Sustainable Designs in Switch-Mode Power Designs

Really Cool. Really Efficient. New 400 kHz current sensors enable more sustainable designs in switch-mode power designs.

Technical Article

Solar Energy Systems – New Market Trends in Current Sensing

P0103 - As solar installations grow larger and more ambitious by the day, new trends in current sensing are emerging for this expanding energy market.

Application Note

An Effective Method for Characterizing System Bandwidth in Complex Current Sensor Applications

This application note describes multiple methods for measuring and characterizing system bandwidth, with a focus on the impulse response method. Allegro’s ACS720 is the perfect device to validate the test methods outlined here.

Application Note

High-Current Measurement with Allegro Current Sensor IC and Ferromagnetic Core: Impact of Eddy Currents

AN296162 - The technique of measuring bus bar current with a surrounding ferromagnetic core is common knowledge. For highcurrent measurement above 200 A, Allegro recommends using a linear IC of the A136x family

Technical Article

Allegro is Driving the Future with Reliable eMobility Solutions

Techmezine speaks with Andreas P. Friedrich on Allegro’s Battery Management Solutions and latest innovation for EV.

Brochure

Brochure: Industry's First ASIL-C Field Current Sensor for eMobility

The ACS37601 is Allegro’s latest and most advanced linear Hall-effect sensor IC for core-based current sensing, developed in accordance with the ISO 26262 functional safety standard to achieve an ASIL C safety rating.

Brochure

Brochure: Driving Change by Advancing Personal Mobility Through Cutting-Edge Technology

Our advanced sensor and power IC solutions are engineered specifically to meet the unique requirements of these designs, providing superior performance and reliability in harsh environments and under complex operating conditions.

Application Note

How to Analyze and Compare Allegro Current Sensor and ADC Error Components

AN296282: Allegro offers a wide variety of current sensors with analog voltage outputs, and in many applications, an analog-to-digital converter (ADC) converts the output voltage to a binary code.

Application Note

Achieving Closed-Loop Accuracy in Open-Loop Current Sensors

Closed-loop current sensing technology is employed in many industrial and automotive applications for accurate current sensing. Allegro MicroSystems has developed magnetic-based current sensor IC solutions that achieve near closed-loop accuracy using an open-loop topology.

Technical Article

Magnetic Current Sensing Drives Vehicle Electrification

Modern cars have become increasingly power hungry. Even the “least electrified” vehicles include advanced electronics for infotainment, safety, and engine control. Fully electric vehicles further add high-voltage power domains to charge and drive. Each of these systems shares the need for power monitoring and control, and this is where current sensors are used.

Application Note

PCB Ground Plane Optimization for Coreless Current Sensor Applications

AN296277 - This application note provides guidelines on how a PCB ground plane around the sensor location should be designed to achieve optimum performances.

Application Note

New Approaches to High-Efficiency Current Sensing: Integrated Hall Sensor ICs Save Power and Space

AN296100: Allegro current sensor ICs allow design engineers to use Hall-effect based current sensor ICs in new applications where increased energy efficiency or new operating features are required. Wherever current sensing is needed, an integrated Hall-effect IC can provide a solution.

Application Note

Current Sensing for Power Delivery

AN296256 - This article will discuss the advantages of various current sensing methods in power delivery.

Video

ACS780 & ACS781: High Current Density Fully Integrated Current Sensor ICs

Allegro’s new family of fully integrated current sensor linear ICs in a new core-less package designed to sense AC and DC currents up to 100 A.

Video

ACS712 Low-Noise 2100 VRMS Hall-Effect Current Sensor IC

The Allegro ACS712 provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems. The device package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection.

Technical Article

Overcoming Size Challenges in PCB Design with Magnetic Current Sensors

Magnetic current sensors provide a compact and efficient alternative to traditional current measurement techniques that significantly reduce the size of components on PCBs.

Technical Article

Crank Sensor IC for Stop-Start

This article describes start-stop operation and enabling Hall-effect integrated circuits, in particular the Allegro MicroSystems ATS694 and the previous generation ATS658, which are used in this application.

Application Note

Improving Efficiency in Smart Grid Applications With Fully Integrated Current Sensing ICs

With increasing concerns about the global demand for energy and environmental awareness, power electronics applications are under pressure to improve efficiency.