0 to 50 A Current Sensor ICs with Integrated Conductor

Magnetic Current Sensing Drives Vehicle Electrification

January 25, 2024

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 ...

Solar Energy Systems – New Market Trends in Current Sensing

April 01, 2021

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

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

July 01, 2020

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

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.

Current Sensors FAQ

Have questions about our industry-leading current sensor ICs? Check out our most frequently asked questions and answers.

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.

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

May 02, 2022

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.

DC and Transient Current Capability/Fuse Characteristics of Surface Mount Current Sensor ICs

AN269122 - Allegro Microsystems offers a broad product family of current sensor IC solutions with integrated conductors. For applications with normal operating currents up to 50 A, Allegro offers current sensor ICs in a number of standard surface-mount packages, such as SOIC-8, SOICW-16, QSOP-24, ...

Recent Trends in Hall-Effect Current Sensing

This paper presents recent advances in integrated Hall-effect–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.

Allegro MicroSystems - Managing External Magnetic Field Interference When Using ACS71x Current Sensor ICs

The highly compact Hall effect current sensor ICs without concentrators that are now available make it possible to enhance performance of small-current differentiation by simple layout steps and shielding the device from extraneous magnetic flux along its primary sensing axis.

Increased Electric Motor Content in HEV Subsystems Require Current Sensing

To control the drive train in HEV and full EV vehicles, it is well-known that current sensing is required particularly in starter generator and main electric drive motor generator applications.

Improved Performance and Features of Allegro’s Next Generation, High Power Density CB Package Current Sensors

This application note will describe the use of the new high current ACS772 Hall-effect current sensor integrated circuit (IC) from Allegro MicroSystems and will give an overview of its features and improvements from previous Allegro high-current sensors.

Using Allegro Current Sensor ICs in Current Divider Configurations for Extended Measurement Range

This application note describes simple methods for increasing the measurable current range. These methods involve splitting the path of the current being sensed. Various options of devices and circuits are described.

Differential Current Sensing with the 1 MHz Bandwidth ACS733

AN296154 - This application note describes the use of the new highly isolated, high bandwidth ACS733 Hall-effect current sensor integrated circuit (IC) from Allegro MicroSystems and gives an overview of its features and advantages over a highspeed current transformer (CT) current sensing solution.

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.