電界センサー 0～1000 A 超センサー IC
要求の厳しい車載および産業用アプリケーションにおいて、当社のフィールド電流センサは、浮遊磁界耐性と高度な診断機能による堅牢な性能を発揮し、比類のない精度の電流検出を実現します。
Featured Products
ACS37630
The ACS37630 is a contactless current sensor using Allegro’s high-precision vertical Hall technology.
ACS37610
The ACS37610 is a truly coreless, high precision, Hall-Effect current sensor with common-mode field rejection and high bandwidth ideal for electric vehicle (EV) applications.
CT455
The CT455 is a high bandwidth and low noise integrated contactless current sensor that enables high accuracy current measurements.
ACS70310/ACS70311
240kHz, Highest Accuracy Programmable Linear Sensor with Reverse Battery Protection
当社のホール効果に基づくリニア電流センサー ICS については、以下を参照してください。
Documentation & Resources
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.
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
Increasing System Safety using the A1365 Programmable Linear Hall-Effect Sensor IC with Self-Test Diagnostic Mode
As safety goals multiply throughout the system design process, customers demand smart sensors that can be used to diagnose abnormalities in a system. The built-in Self-Test mode of the A1365 grants users such insight into their systems.
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.
Application Note
Guidelines for Designing a Concentrator for High-Current Sensing Applications with an Allegro Hall-Effect Sensor IC
A concentrator focuses magnetic flux lines, which are generated by electrical current flowing through a conductor, at the center of the air gap, where the Hall-effect magnetic sensor IC is positioned.
Application Note
Crosstalk Error Estimation and Reduction Through Busbar Design for the ACS37610 Coreless Current Sensor
This application note can be used to estimate the crosstalk error for adjacent notched busbars in combination with the ACS37610 coreless differential Hall sensor. This information can be useful when designing, for example, the three phases of a traction inverter.
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
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.
Brochure
Brochure: Innovative Current Sensor ICs
Allegro MicroSystems has been driving innovation in the current sensor industry for more than 17 years, with a history of first-to-market products that give our customers a competitive edge. Our advanced ICs help you achieve higher efficiency and power density in your designs.
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
ACS37610 Busbar Geometry and Design Techniques for Coreless Differential Current Sensors
AN296194 - The purpose of this application note is to offer guidelines for selecting the optimum combination of ACS37610 and busbar geometry for a given current sensor application and its specific requirements.
Application Note
Notched Busbar Design Guidelines For Coreless ACS37610 Differential Current Sensor
AN296231 - This application note focuses on how a busbar should be designed to achieve optimum performance with the ACS37610 coreless current sensor.
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
Material Selection and Geometry Considerations for High Current Sensing Magnetic Flux Concentrator Designs
AN296245 - Core material selection, geometry, and air gap dimensions will all impact the performance of the flux concentrator. This note will explain each of these factors and provide a detailed guide for design of a magnetic flux concentrator.