Integrated Current Sensors

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.

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 ...

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. ...

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 ...

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 ...

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 ...

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 ...

Current Sensing For Renewable Energy

In grid-tied photovoltaic systems, designers must focus on minimizing cost per watt to deliver the best possible return on investment.

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 ...

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.

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 ...

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 ...

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 ...

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.