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We've been driving innovation in the current sensor industry since 2002, 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. Our fully integrated solutions make design-in easy.
We're leading the market in main traction motor and auxiliary inverters for electric vehicles, and OEMs trust us for applications like DC-to-DC converters and on-board chargers.
We also shine at high voltage with industry-leading isolation ratings of up to 1100 Vrms—ideal for residential and industrial solar inverter applications.
Our packages have the highest working voltages in SOIC-16 footprint
Our current sensors include fast overcurrent detection in addition to a precision analog output.
High speed integrated sensors are the smart alternative to bulky current transformers (CTs).
Our family of fully integrated, high isolation current sensor solutions provides accurate measurement with very low resistance—all without the need for external isolation components.
Our fully-integrated, high current sensor IC packages provide high accuracy and reliability. Our automotive-grade devices that can take the heat and deliver highly accurate open-loop current sensing in the harshest applications environments.
Customer-programmable for both offset and sensitivity, these Hall linear ICs are packaged in a 1 mm thick KT package SIP that is often used in applications with a ferromagnetic core and are designed to sense currents above 1500 A.
The ACS37612 is a standalone Hall-based coreless differential current sensor that measures currents from 200A to >1000A without requiring a magnetic concentrator core or a shield.
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.Learn More
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.Learn More
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.Learn More
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 familyLearn More
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.Learn More
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.Learn More
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.Learn More
June 01, 2021
The ACS3761X Hall-effect sensor IC solution family is a coreless and shield-free solution, reducing BOM and overall inverter size and weight. These differential sensors reject stray magnetic fields, reducing reliance on software. The family is optimized for a large range of currents, 100 A to >4000 ...Learn More
August 24, 2020
Watch video explaining and demonstrating a method for rejecting stray magnetic fields in Hall-effect-based current sensors using the ACS724. This technology solves interference and cross-talk issues, greatly simplifying the use of magnetic current sensors in magnetically noisy environments, such as ...Learn More