Allegro robotics products are expanding with 48V power-management chips and precision position sensors designed for humanoid robots, the company announced on October 20, 2026. Allegro MicroSystems said the components address space, weight, heat and safety constraints, while its collaboration with Sarcomere Dynamics is set to extend from a robotic gripper to a more complex robotic hand.
Key Takeaways
- Allegro says its A81481 power chip can cut power-system footprint and component costs by roughly 50%.
- The sensor lineup targets both high-torque body joints and tightly packed robotic fingers.
- Sarcomere Dynamics plans to extend the collaboration to its 24-degree-of-freedom ARTUS Dex hand.
Table of Contents
- Allegro robotics targets compact 48V power systems
- Different sensors for body joints and robotic fingers
- Sarcomere collaboration has a planned next stage
- Conclusion
Allegro robotics targets compact 48V power systems
In its robotics portfolio announcement, Allegro said the A81481 power-management integrated circuit supplies power and safety regulation directly from a 48V bus, removing the need for external pre-regulators. The company estimates that the integration can reduce the power system’s footprint and bill-of-materials costs by roughly 50%; that is not a claim about the cost of an entire robot.
The practical challenge is fitting power conversion into small, enclosed joints and sensing modules. Allegro said humanoid designs are adopting 48V architectures to reduce cable weight and resistive losses, but still need to step that voltage down safely for other components.
The A81481 combines power regulation with ASIL-D-capable safety diagnostics, including a triple-watchdog architecture. These are component capabilities described by Allegro, rather than a statement that a finished robot has obtained a particular safety certification.
| Item | Details |
|---|---|
| A81481 package | 6 × 6 mm, containing two buck regulators and five low-dropout outputs. |
| A17803 packaging option | An ultra-compact QFN package is available. |
| CT310 specification | Sub-degree accuracy in a 2 × 2 mm DFN package, according to Allegro. |
| A33023 interfaces | Multiple digital output options, with low latency and diagnostic support. |
Different sensors for body joints and robotic fingers
For high-torque shoulder, hip and knee joints, Allegro is offering the A17802 and A17803 inductive position sensors. The company says their built-in immunity to stray magnetic fields avoids supplemental shielding, while compensation and filtering help them tolerate changes in the mechanical air gap.
For hands and fingers, the CT310 TMR and A33023 Hall-effect angle sensors target tighter packaging constraints. Allegro positions them as solid-state alternatives to wire-wound resolvers and optical encoders, with greater resilience to contamination, mechanical shock and runout.
The distinction matters because a humanoid robot needs both powerful large-joint movement and fine control in small joints. Allegro’s portfolio addresses those requirements with different sensing technologies rather than a single sensor design.
Sarcomere collaboration has a planned next stage
Sarcomere Dynamics CEO and co-founder Harpal J.S. Mandaher said the companies are partnering to integrate Allegro motion controllers, sensors and power chips into the Scorpion gripper. He said the collaboration is on track to extend to ARTUS Dex, a next-generation robotic hand with 24 degrees of freedom.
That extension remains planned, not a completed deployment. The announcement did not disclose an order value or revenue contribution, and Allegro identified customer adoption, commercialization and the timing of design wins as risks to expected outcomes.
Conclusion
Allegro’s announcement sets out component capabilities and a planned collaboration expansion, rather than quantified commercial results. The next confirmed showcase is electronica 2026, where the company plans to display its robotics power and sensing products at Hall C6, Booth 129.
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