Allegro Microsystems

What Allegro Microsystems does

Allegro MicroSystems, Inc. (NASDAQ: ALGM) is a fabless semiconductor company founded in 1990 and headquartered in Manchester, New Hampshire, that designs and supplies magnetic sensor ICs and application-specific power ICs for motion control and energy-efficient power conversion. The company combines proprietary magnetic sensing technologies (Hall-effect, GMR, and its XtremeSense TMR platform) with power management ICs such as the Power-Thru isolated gate driver family, shipping approximately 2 billion units annually to more than 15,000 customers worldwide from a portfolio of over 1,500 products protected by roughly 1,900 patents.

Allegro's product lines target three primary verticals: automotive (xEV powertrains, ADAS, traction inverters, battery management, and in-cabin motors, where virtually all major global OEMs are customers), industrial (AI data center power, factory automation, robotics, and clean energy systems), and consumer electronics. Recent flagship products include the ACS37100 10 MHz TMR current sensor for GaN/SiC systems, the ACS37200 ultra-low-loss isolated current sensor, the AHV85003/AHV85043 isolated gate driver chipset, and the A89224 automotive SoC (Best-in-Show at Electronica 2024). Technology differentiation comes from integration (combining gate driver and bias supply in single packages), accuracy (0.55% sensitivity error over temperature/lifetime), and high-bandwidth sensing (10 MHz) tailored to next-generation wide-bandgap power designs.

The company operates an asset-light fabless model, with manufacturing supported through its joint venture Polar Semiconductor (alongside majority shareholder Sanken Electric) and a global distribution network that combines direct sales offices in the US, Europe, Japan, Korea, China, Taiwan, and India with authorized distributors including Arrow, Future Electronics, Mouser, and DigiKey. In FY2026 Allegro reported $890 million in revenue (up 23% YoY) with 50% gross margin, driven by automotive strength (including a BMW sole-source BEV traction inverter win) and rapid growth in data center applications, which quadrupled year-over-year to 14% of Q4 sales. Recent M&A includes Heyday Integrated Circuits (2022, isolated gate drivers) and Crocus Technology (2023, $420M, advanced TMR sensing), while a July 2024 $600 million secondary offering reduced majority owner Sanken Electric's stake to roughly 33.2%.

Name

Allegro Microsystems

Legal name

Allegro MicroSystems, Inc.

Website

https://allegromicro.com

Company type

Public

Founded year

1990

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Fabless semiconductor company designing magnetic sensor ICs (Hall-effect, TMR, GMR) and application-specific power ICs for automotive electrification, industrial automation, and AI data center power management, serving 15,000+ customers globally through direct sales offices and a worldwide distributor network.

Ownership category

akta.pro rank

Product category

Analog Semiconductors (Magnetic Sensors and Power ICs)

NAICS

Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451), Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)

SIC

Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Automotive & Industrial ICs (ADAS/Powertrain/Factory/Robotics) (HDAHABAD)

akta.pro secondary industry

Power Management & Power Conversion ICs (PMIC/DC‑DC/AC‑DC/Gate Drivers) (HDAHABAE)

Keywords

• Magnetic sensor ICs
• Power management semiconductors
• Automotive current sensing
• Isolated gate drivers
• Motor driver ICs

Headquarters

HQ city

Manchester

HQ country

United States

HQ region

North America

Offices15 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Supply Chain, Operations, Personnel, Marketing or Sales, Infrastructure

Revenue model

1. Sensor IC Products: Magnetic sensor ICs including Hall-effect, TMR, and GMR sensors for current sensing, position sensing, and speed detection. Shipped approximately 2 billion units annually to over 15,000 customers worldwide.
2. Power IC Products: Application-specific power ICs including motor drivers, gate drivers, voltage regulators, and power management solutions for automotive, industrial, and consumer applications.
3. Professional Services: Technical support, design assistance, and customization services for customers implementing Allegro solutions.

Pricing tiers

Go-to-market motion2 records

Distribution channels8 records

Marketing channels7 records

Core offering

Allegro MicroSystems designs, develops, and manufactures advanced magnetic sensor integrated circuits (ICs) and application-specific power ICs for automotive, industrial, and consumer markets. The company produces approximately 2 billion units annually across more than 1,500 products, including Hall-effect, TMR, and GMR sensors for current sensing, position sensing, and speed detection, as well as motor drivers, isolated gate drivers, and voltage regulators for power conversion and motion control applications.

Differentiator

Problem solved

Functional benefit

Brands

• XtremeSense: Allegro's TMR (Tunneling Magnetoresistance) technology brand for high-bandwidth, high-accuracy current sensors
• Power-Thru

Products and services

• ACS37017 Hall-Effect Current Sensor Industry benchmark accuracy Hall-effect current sensor with 0.55% typical sensitivity error over temperature and lifetime, 750 kHz bandwidth with 1 µs response time, and ±800 VPK/565 VRMS reinforced isolation. Designed for AI data centers, electrified vehicles, and clean energy applications.
• ACS37200 Galvanically Isolated Current Sensor Ultra-low-loss galvanically isolated current sensor with industry-leading 50 µΩ conductor resistance that reduces power loss by 90% versus typical 0.5mΩ shunt resistors, while achieving 95% smaller footprint. Targets hybrid/electric vehicles, industrial automation, AI data centers, and solar inverters. UL 62368-1 certified.
• AHV85003/AHV85043 Isolated Gate Driver Chipset Dual-chip isolated gate driver chipset for high-voltage silicon carbide designs. Eliminates need for external isolated bias supplies, reduces common-mode capacitance by up to 15x, delivers up to 20dB improvement in EMI performance, and supports multi-source SiC strategy.
• ACS37100 10 MHz TMR Current Sensor Industry's first production-ready 10 MHz TMR (Tunneling Magnetoresistance) current sensor for next-generation power systems. Enables precise, high-speed control to maximize performance and efficiency of GaN and SiC power systems in electric vehicles, clean energy, and AI applications.
• CT4022 and CT4032 XtremeSense TMR Current Sensors Latest XtremeSense TMR current sensors from Allegro designed for clean energy generation, distribution, and storage applications. Leverages proprietary Tunneling Magnetoresistance technology for high-bandwidth, high-accuracy current sensing.
• Motor Control and Thermal Management Solutions Three new IC solutions designed to enhance motor control and thermal management performance in e-mobility and industrial automation applications. Targets electric vehicle powertrain and factory automation customers.
• A89224 Automotive System-on-a-Chip (SoC) Automotive System-on-a-Chip designed for automotive applications, awarded Best-in-Show at Electronica 2024 by Embedded Computing Design. Combines integrated sensing and power functionality for vehicle systems.
• Inductive Position Sensors and Magnetic Switches New inductive position sensors and a series of micropower magnetic switches and latches introduced at Electronica 2024 for automotive, industrial, and consumer applications requiring low-power position and switching sensing.
• Power Products for Energy Efficiency Groundbreaking series of power IC products designed to redefine performance and efficiency across automotive, industrial, and data center applications. Includes gate drivers and power management solutions.
• CT455 and CT456 High-Bandwidth TMR Current Sensors High-bandwidth current sensors using proprietary XtremeSense TMR technology. First products launched following Allegro's acquisition of Crocus Technology, targeting high-performance power conversion applications.
• ACS37220 and ACS37041 Current Sensors High-power current sensor ACS37220 paired with the ACS37041, Allegro's smallest lead magnetic current sensor. Targets industrial, automotive, and clean energy applications.
• AHV85000/AHV85040 Isolated Gate Driver IC Dual-chip AHV85000 and AHV85040 isolated gate driver IC solution. Third product in Allegro's High Voltage Power-Thru product family for high-voltage power conversion.
• ACS37035 1 MHz High Accuracy Chopped Current Sensor 1 MHz high-accuracy chopped Hall-effect current sensor offering factory-trimmed accuracy and integrated fault protection without requiring customer programming. Featured as a current sensor solution for high-bandwidth applications.
• AHV85111 Bipolar Output Power-Thru IC Isolated gate driver IC with bipolar output that adds critical safety features while simplifying high-power energy conversion system design. Part of Allegro's Power-Thru High Voltage product family.
• AHV85110 Power-Thru Isolated Gate Driver Power-Thru isolated gate driver IC enabling leading power conversion density for high-voltage power systems. Combines gate driver and isolated bias supply in a single package.
• ACS37601 ASIL C Safety Rated Field Current Sensor Industry's first ASIL C safety rated field current sensor with best-in-class accuracy for traction and auxiliary inverter systems in electric vehicles. Enables functional safety compliance for xEV powertrains.
• A31316 3D PCB-less Magnetic Position Sensor Highly accurate 3D magnetic position sensor with integrated safety diagnostics ensuring reliable position tracking in harsh environments. PCB-less package design enables compact and robust integration in automotive and industrial applications.

Quantifiable outcome

• Reduces power loss by 90% compared to traditional shunt resistors
• +5 more outcomes

Named customers8 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Nine partnerships are on record, tiered minor, core and flagship.

• UC San DiegominorStrategic or Co-development Partner · 24 June 2026Allegro participates in multi-institutional ARPA-H research program led by UC San Diego to develop point-of-care diagnostic test for assessing fetal hypoxia risk during labor. Allegro contributes expertise in protein biomarker discovery support.
• Sera PrognosticsminorStrategic or Co-development Partner · 24 June 2026Sera Prognostics announced collaboration with Allegro MicroSystems as part of $10.4M ARPA-H award program for developing rapid testing platform for maternal blood samples to assess fetal hypoxia risk.
• RAM InnovationsminorStrategic or Co-development Partner · 6 January 2026Allegro and RAM Innovations partnership delivers next-generation high-density GaN solutions for AI data centers and EVs. RAM Innovations leverages Allegro's power and sensing technology.
• GHSPcoreStrategic or Co-development Partner · 30 April 2024GHSP collaborated with Allegro to introduce the eVibe system, an innovative solution changing the future of electric vehicles through advanced power and sensing technology.
• Crocus TechnologycoreStrategic or Co-development Partner · 30 October 2023Completed acquisition of Crocus Technology for $420 million in cash. Crocus is a leader in advanced TMR sensor technology. This acquisition accelerated innovation in TMR sensing and enabled Allegro to launch industry-first 10 MHz TMR current sensors.
• BMW GroupflagshipStrategic or Co-development Partner · 17 October 2023BMW Group selected Allegro as the sole Current Sensor IC supplier for their traction inverter systems used across the company's Battery Electric Vehicles. Represents major automotive OEM win.
• Polar SemiconductorcoreStrategic or Co-development Partner · 1 January 2023Polar Semiconductor is jointly owned by Allegro and Sanken Electric. Polar secured $150 million equity investment from One Equity Partners to expand 200mm sensor and high-voltage power wafer capacity at its Minnesota facility. Also pursuing U.S. CHIPS Act funding.
• Heyday Integrated CircuitscoreStrategic or Co-development Partner · 2 September 2022Completed acquisition of Heyday Integrated Circuits, a French company specializing in isolated gate drivers for high-voltage power systems. The acquisition enhances Allegro's presence in electric vehicles, solar inverters, data centers, and industrial applications, accelerating high-efficiency power design development.
• Mouser ElectronicscoreChannel Partner/ Reseller/ Distributor · 19 July 2022New distribution partnership with Mouser Electronics extends Allegro's global distribution footprint, giving customers new options for purchasing product samples, evaluation boards, and production inventory.

Scale indicators18 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Infineon Technologies: Global automotive and industrial power semiconductor leader with overlapping sensor and gate driver portfolios serving EV traction inverters, ADAS, and industrial automation. Closest direct competitor to Allegro in magnetic current sensing and high-voltage power ICs.
• STMicroelectronics: European IDM with strong automotive and industrial semiconductor presence, including motor drivers, gate drivers, and current sensors. Directly competes with Allegro in automotive power conversion and factory automation.
• onsemi: Automotive and industrial power semiconductor specialist pursuing similar EV traction inverter and SiC opportunities. Made the disclosed $6.9 billion takeover proposal for Allegro, signaling intense product overlap and competitive intensity.
• Monolithic Power Systems: Fabless power management IC specialist focused on DC-DC, motor drivers, and current sensing for automotive, industrial, and computing applications. Direct competitor to Allegro's power IC business with strong data center exposure.
• ROHM Semiconductor: Japanese semiconductor company specializing in power ICs, gate drivers, and SiC discretes for automotive and industrial markets. Direct overlap with Allegro's Power-Thru isolated gate drivers and EV power conversion products.

Broad incumbents

• Texas Instruments: Largest analog and power management IC vendor with broad portfolios covering PMICs, gate drivers, and motor control. Competes with Allegro's regulator and power IC lines across automotive and industrial customers, though Allegro's magnetic sensor focus is a narrower specialization.
• Analog Devices: Broad incumbent in analog and mixed-signal semiconductors serving automotive, industrial, and healthcare with sensing, signal chain, and power conversion products. Overlaps with Allegro in current sensing and isolated gate drivers but offers a much wider portfolio.
• NXP Semiconductors: Major automotive semiconductor supplier with strong MCU, radar, and power management positions. Competes with Allegro at automotive OEMs for ADAS, body electronics, and electrification content but is broader in scope.
• Renesas Electronics: Automotive and industrial semiconductor incumbent with MCU, analog, and power portfolios. Competes with Allegro for automotive and factory automation sockets, particularly through Japanese OEM and Tier 1 relationships.
• Microchip Technology: Mixed-signal and microcontroller vendor with automotive, industrial, and motor control products. Competes with Allegro in industrial motor drivers and automotive sensor/microcontroller bundles.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/allegromicro
• LinkedInlinkedin.com/company/allegro-microsystems
• Xx.com/allegromicro

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries4 records

Funding overview

Funding rounds2 records

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A2 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Allegro Microsystems