Allegro MicroSystems Unveils 48V Power and Precision Sensing Solutions to Enhance Physical AI in Humanoid Robotics 

Allegro MicroSystems (ALGM) is expanding its robotics portfolio with 48V power management and precision sensing products for humanoid robots.

Rhea-AI Summary

Allegro MicroSystems (ALGM) is expanding its robotics portfolio with 48V power management and precision sensing products for humanoid robots. The lineup includes the A81481 power management chip, A17802 and A17803 inductive position sensors, and CT310 and A33023 angle sensors. Allegro says the A81481 integrates power regulation and safety diagnostics while reducing total system footprint and component costs by roughly 50%.

The inductive sensors target high-torque joints, including shoulders, hips and knees, while the angle sensors address tighter spaces in robotic hands and fingers. Sarcomere Dynamics said its partnership integrates Allegro motion controllers, sensors and power chips into its Scorpion gripper, with an extension to its next-generation ARTUS Dex robotic hand on track. That hand has 24 degrees of freedom.

Key Figures

Power architecture: 48V System footprint and BOM costs: Roughly 50% reduction PMIC package size: 6x6 mm +2 more

Power architecture

48V

A81481 power management IC for robotics

System footprint and BOM costs

Roughly 50% reduction

A81481 integrated 48V PMIC

PMIC package size

6x6 mm

A81481

Sensor accuracy

Sub-degree

CT310 TMR angle sensor

Robotic hand degrees of freedom

24 degrees of freedom

Sarcomere Dynamics' next-generation ARTUS Dex hand

Key Terms

pmic, asil-d, low-dropout (ldo), hall-effect

4 terms

pmic technical

"The A81481 48V power management IC (PMIC) reduces overall system footprint"

A PMIC is a small integrated circuit that controls how power is distributed and used inside electronic devices, like a building’s electrical panel for a smartphone or laptop. It coordinates battery charging, voltage levels and power-saving modes to improve battery life, reduce heat and protect components. For investors, a better PMIC can make a product more competitive, lower manufacturing costs or reduce return rates, all of which can affect profit and market position.

asil-d technical

"ASIL-D-capable safety diagnostics (including a triple-watchdog architecture)"

ASIL-D is the highest safety classification under automotive functional-safety standards, meaning a component or software must meet the strictest requirements to prevent life-threatening failures. For investors, an ASIL-D designation signals greater engineering complexity, higher development and certification costs, and stronger barriers to entry — but also potential competitive advantage and reduced liability once achieved, similar to a top safety rating on a consumer product.

low-dropout (ldo) technical

"five low-dropout (LDO) outputs"

A low-dropout regulator (LDO) is a type of linear voltage regulator that maintains a stable output voltage even when the input voltage is only slightly higher than the desired output. It achieves regulation with a small minimum difference between input and output called the dropout voltage; important performance details include that it is not a switching regulator (so it dissipates excess voltage as heat), and its usefulness is limited by dropout voltage, quiescent current and thermal dissipation limits.

hall-effect technical

"A33023 Hall-effect angle sensors"

A hall-effect is a physical phenomenon where a magnetic field pushing on an electric current in a material creates a small voltage at right angles to both; sensor devices measure that voltage to detect magnetic fields, position, speed or current. Investors care because hall-effect components are key parts in electric motors, vehicle sensors, power electronics and consumer devices; their performance, cost and supply affect a maker’s product competitiveness and revenue potential, much like a reliable engine part determines a car’s usefulness.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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New portfolio addresses critical size, weight, and safety challenges in humanoid robots, as Sarcomere Dynamics collaboration enables near-human dexterity

MANCHESTER, N.H., Oct. 20, 2026 (GLOBE NEWSWIRE) -- Allegro MicroSystems, Inc. (“Allegro”) (Nasdaq: ALGM), a global leader for motion control and energy-efficient systems, is expanding its robotics portfolio with precision sensing and 48V power architectures to address key hardware challenges in physical AI, including torque density, thermal management, and functional safety for human-robot collaboration. 

Key Portfolio Innovations Include: 

• 48V Power Integration: The A81481 48V power management IC (PMIC) reduces overall system footprint and hardware costs by 50% while accelerating time-to-market for robotics OEMs.
• High-Torque Joint Precision: The A17802 and A17803 inductive position sensors deliver stray-field immunity without supplemental shielding and tolerate mechanical air-gap variations.
• Micro-Joint Dexterity: The CT310 XtremeSense™ TMR and A33023 Hall-effect angle sensors deliver sub-degree, solid-state accuracy to replace bulky wire-wound resolvers and optical encoders.
  
  

“Precise motion control, accurate sensing, and efficient power management are fundamental to advanced robotic manipulation,” said Harpal J.S. Mandaher, CEO and co-founder of Sarcomere Dynamics Inc. “We’re proud to partner with Allegro to integrate their advanced motion controllers, sensors, and power ICs into our Scorpion gripper and are on track to extend this collaboration to our next-generation ARTUS Dex – a 24-degree-of-freedom (DoF) robotic hand that delivers near-human dexterity for advanced physical AI applications.”

Single-Chip PMIC Simplifies and Shrinks 48V Robotic Power Design 

As humanoid designs adopt 48V architectures to reduce cabling weight and minimize resistive losses, engineers face the challenge of safely stepping down higher voltages within tight enclosures. Leveraging decades of automotive engineering experience, Allegro’s A81481 addresses this directly. As a single-chip 48V PMIC engineered for safety-critical robotics, it delivers complete system power and safety regulation directly from a 48V bus, eliminating the need for external pre-regulators. 

By integrating dual buck regulators, five low-dropout (LDO) outputs, and ASIL-D-capable safety diagnostics (including a triple-watchdog architecture) into a 6x6 mm compact package, the A81481 powers remote sensing clusters while simplifying board layout and cutting total system footprint and BOM costs by roughly 50%. 

Sub-Degree Precision for Fluid, Natural Motion

For high-torque actuators like shoulder, hip, and knee joints, the A17802 and A17803 inductive position sensors provide accurate and reliable position measurement in demanding motor control environments. The A17803 is also available in an ultra-compact QFN package, and both sensors deliver reliable operation under varying air gaps through on-chip compensation and advanced filtering, while built-in stray-field immunity eliminates the need for expensive shielding. 

For the tighter mechanical constraints of robotic hands and fingers, Allegro’s CT310 XtremeSense™ TMR and A33023 Hall-effect angle sensors offer greater resilience to contamination, mechanical shock, and runout that can degrade traditional encoder technologies. The CT310 delivers sub-degree accuracy in a 2x2 mm DFN package, while the A33023 adds low-latency, stray-field immunity, and multiple digital output options for applications requiring robust diagnostics and functional safety support.

“In fixed industrial robots, weight and space are less constrained because thick cables, large external drives and liquid cooling are practical,” said Andreas Friedrich, Senior Director of Technology & Strategy at Allegro MicroSystems. “But in autonomous humanoids with 30-plus degrees of freedom, every gram and millimeter matters. By combining true 48V power management, robust motor and gate drivers, stray-field-immune inductive and compact TMR sensors, we give robotics engineers integrated, safety-ready building blocks to maximize torque, manage tight tolerances, and enable fluid motion.” 

Availability 

For more information about the A17802 and A17803 QFN package variant inductive position sensors, the CT310 TMR angle sensor, the A33023 Hall-effect angle sensor, and the A81481 PMIC, including samples and evaluation support, visit Allegro Robotics Building Blocks. Attendees at electronica 2026 can also see Allegro’s latest robotics power and sensing solutions at Hall C6, Booth 129. 

About Allegro MicroSystems 

Allegro MicroSystems, Inc. is leveraging more than three decades of expertise in magnetic sensing and power ICs to propel electrification, automation, AI data center, and robotics forward with solutions that enhance efficiency, performance and sustainability. Allegro’s commitment to quality drives transformation across industries, reinforcing our status as a pioneer in “automotive-grade” technology and a partner in our customers' success. For additional information, visit allegromicro.com. 

Forward-Looking Statements 

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical facts contained in this press release, including statements regarding the anticipated performance, customer benefits, cost savings, and customer collaboration potential of Allegro’s products and the timing of such collaborations, are forward-looking statements. These statements involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. 

In some cases, you can identify forward-looking statements by terms such as “will,” “expect,” “anticipate,” “plan,” “project,” “believe,” “estimate,” “potential,” or other similar expressions. No forward-looking statement is a guarantee of future performance, and you should avoid placing undue reliance on these statements. 

Forward-looking statements are based on management’s current expectations and assumptions and are subject to risks and uncertainties. Actual results may differ materially from those expressed or implied in the forward-looking statements due to various factors, including, but not limited to: our ability to successfully develop and commercialize new products; customer adoption rates of emerging technologies; the timing and success of customer design wins; our ability to compete effectively; and other risk factors identified in our Annual Report on Form 10-K for the year ended March 27, 2026, as updated by our Quarterly Reports on Form 10-Q and other filings with the Securities and Exchange Commission. All forward-looking statements speak only as of the date of this press release, and except as required by law, we assume no obligation to update them. 

Media Contact:
Andrew MacLellan
Corporate Communications
(617) 633-4909
am@embedded-pr.com

Allegro Contact:
Ram Sathappan
Vice President of Global Marketing and Applications
rsathappan@allegromicro.com

A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/552c4e45-4aa0-4d27-b0f4-495d933f6caf