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Micro Inverters

Lean on Allegro's reputation for reliability to withstand extreme temperatures, humidity and dust, prolonging the lifetime of your rooftop microinverter. Our small, and integrated solutions improve power density, while reducing design complexity.

Select a subsystem below to view related products. 

Microinverter Application Diagram
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    PV Input Current Sensors

    CT110 – High Linearity/High Resolution Contact Current Sensor
    ACS711 – 0A-31A Hall Current & Fault Sensor
    ACS37002 – High Isolation & Accuracy 400kHz Current Sensor
    CT432 – High Bandwidth and Accuracy Current Sensor
    CT433 – High Bandwidth and Accuracy Current Sensor
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    System Power Conversion

    ARG81801 – Wide Input Voltage, 2.4 MHz, 3.0 A Asynchronous Buck Regulator

    APM81911 – 3A Synchronous Buck Regulator with Integrated Capacitors and Inductor

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    AC Output Current Sensors

    ACS37002 – 0-80A Current + Fault Sensor

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    DC/DC Half Bridge Drivers

    A89500 –100V Fast Switching Half Bridge MOSFET Driver

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    Fully Integrated Isolated Gate Drivers

    AHV85110 – Isolated GaN FET Driver with Integrated Isolated Bias Supply

    AHV85111 – Isolated GaNFET Driver with Regulated Bipolar Output Drive

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Featured Products

LC-EX Package Combo Image for ACS711, a Hall-Effect Linear Current Sensor

ACS711

Hall-Effect Linear Current Sensor with Overcurrent Fault Output for <100 V Isolation Applications

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ARG81801 Product Image

ARG81801

Wide Input Voltage, 2.4 MHz, 3.0A Asynchronous Buck Regulator

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10-contact DFN EJ Package

A89500

100V Fast Switching Half Bridge MOSFET Driver

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Allegro's MA-LA-MC Packages

ACS37002

400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains

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Documentation & Resources

Technical Article

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.

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Technical Article

Solving the Challenges of Increasing Power Density by Reducing Number of Power Rails

March 28, 2023

P0243 - This article overviews challenges associated with high-power-density solutions and the technologies that best enable the desired outcome.

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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.

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Infographic

How Sensor ICs Make Clean Energy Work

Sensor integrated circuits (ICs) are revolutionizing the world of clean energy. Explore the fascinating ways that sensor IC's are shaping out clean energy landscape and paving the way for a more sustainable future.

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Video

Clean Energy Overview

In today’s ever-evolving world, clean energy is not just a necessity, but a global responsibility. Join us in paving the way for a cleaner, greener future! Watch Video.

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Technical Article

Facilitating a Clean Energy Future with Current Sensing Solutions

October 03, 2023

Clean energy technologies, like solar, EV batteries, wind, and hydroelectric, offer a sustainable way to meet energy needs without releasing toxic greenhouse gases.

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Application Note

Current Sensing for Power Delivery

March 11, 2022

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

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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.

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Application Note

Allegro Motor Driving with Angular Sensor IC

AN296171 - This application note will describe how to use Allegro’s motor driver and angle sensor solutions to enable precise driving and reliable monitoring of brushless DC (BLDC) motors.

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Application Note

Vertical Hall Technology Enables Effective Tamper Detection

A recent breakthrough in Hall-effect sensing has enabled the creation of omnidirectional magnetic sensor ICs that match all of the requirements for tamper detection.

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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.

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Technical Article

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.

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