Allegro MicroSystems Releases Power and Thermal Solutions for 800V AI Data Centers

Manchester, New Hampshire, USA – October 29, 2026 – Allegro MicroSystems, Inc. (hereinafter referred to as "Allegro", Nasdaq: ALGM), a global leader in sensing and power solutions for motion control and high-efficiency systems, announced the launch of a series of products for AI data centers and high-performance computing systems that increase power density while helping developers better control energy consumption, optimize thermal management and control device size.

As workloads continue to rise, data centers are accelerating their transition to 800V power distribution and 48V cooling systems, creating an increasingly urgent need for high-speed, high-efficiency, compact semiconductor solutions.

Allegro's expanded product portfolio includes: new versions of the ACS37030 and ACS37002 current sensors in wide-body packages with higher isolation capability, the AHV85311 Power-Thru™ isolated gate driver for silicon carbide power systems, and an upgraded version of the QuietMotion™ A89333 48V motor driver featuring code-free algorithms.

AcBel Polytech, a globally leading power solutions supplier, has integrated Allegro's high-speed current sensors into its latest generation of high-density power solutions for AI data centers to achieve precise power control and system protection.

Rossi Lo, head of R&D at AcBel Polytech, said: "As AI workloads continue to grow, data center power systems need to achieve higher power density while ensuring efficiency and reliability. As power distribution architectures evolve toward higher power and voltage levels, precise power control and fast system protection are becoming increasingly critical, and current sensing is a core part of this. Through deep collaboration with industry partners to integrate new technologies into power solutions, AcBel Polytech continues to advance its products to match the evolving needs of next-generation AI data centers."

Enabling the transition to 800V power distribution architectures

The ACS37030 and ACS37002 current sensors are now available in wide-body package versions, using molding compounds with a high comparative tracking index (CTI) to achieve 6000V impulse withstand capability, thereby improving the electrical safety of high-voltage systems. When AI workloads cause sudden changes in power demand, these new sensors can measure current quickly and accurately, providing protection for power supplies, battery backup units and capacitor banks.

In addition, the compact package helps customers accommodate 800V system application requirements without increasing the size of rack power shelves or power supply units.

The Allegro AHV85311 Power-Thru isolated gate driver is used to drive silicon carbide (SiC) field-effect transistor (FET) designs without the need for an additional isolated power supply, further simplifying high-voltage power supply design workflows. This simplified design approach can reduce board footprint by up to 50%, helping developers create smaller power modules and faster-responding solid-state circuit breakers for 800V data center systems.

Optimizing the efficiency of 48V cooling systems

Cooling is one of the main sources of energy consumption in AI data centers. Allegro's upgraded QuietMotion™ A89333 motor driver helps optimize the operation of 48V server cooling fans without requiring customers to develop complex motor control software.

The A89333 uses built-in control technology to automatically adjust according to changes in airflow conditions and is compatible with the compact fan configurations of 1U, 2U and 4U servers. This helps system developers improve cooling efficiency, reduce development effort and ensure stable system operation as computing density continues to rise. Products in the same family have also been optimized for pump drive applications in liquid cooling systems.

Unlocking customer value and targeting long-term growth

The transition to 800V power delivery and 48V cooling architectures is reshaping the AI data center infrastructure landscape. With its deep technical expertise in current sensing, power management and motor control, Allegro helps customers complete architecture upgrades safely, efficiently and sustainably, advancing electrification from automotive to data centers and supporting the development of a fully electrified society.

Troy Coleman, Senior Vice President of Products at Allegro, said: "The core challenge facing AI data centers is how to handle significantly increased computing demand with lower energy consumption and higher operating efficiency while ensuring safe operation. Our products focus on key system nodes, covering everything from high-voltage power conversion and system protection to intelligent cooling, helping customers solve these challenges. As customers increase their investment in next-generation AI infrastructure, Allegro can also create more significant value for them.

Based on third-party data and internal estimates, Allegro expects that by fiscal year 2031, its serviceable addressable market (SAM) in the AI data center sector will reach $1.7 billion. In addition to AI data centers, these new products are also suitable for scenarios such as industrial automation, robotics and onboard charging systems—areas where the value of efficient 48V system operation, high-voltage isolation and compact design is becoming increasingly prominent.