Infineon Technologies said it completed its acquisition of Bengaluru-based C2i Semiconductors on 5 October 2026. C2i’s team is joining Infineon’s Power Systems division. C2i develops software-defined multiphase controllers and smart power stages for use in AI data centres. Infineon says this expertise complements its power-semiconductor and power-system portfolio and can support development of power-delivery solutions from grid to processor for AI servers and high-performance-computing platforms.

Software-defined power management combines semiconductor hardware with digital control and algorithms to adjust power conversion and regulation in operation. Because AI processor loads can change quickly, power systems must respond to sudden demand shifts while maintaining efficiency and stability. Multiphase controllers distribute power across multiple phases for more precise regulation, while smart power stages combine control and switching components. These are technical product categories; the announcement did not quantify an efficiency gain, name a customer deployment or report new data-centre capacity resulting from the acquisition.

Infineon linked the acquisition to expanding its engineering and research presence in India. It said it employs approximately 2,800 people across India and that the added expertise will support Bengaluru’s role as an innovation centre for digital power technology. That figure refers to Infineon’s total India workforce, not the size of the C2i team acquired. The financial terms were not disclosed in the completion announcement. Infineon’s earlier acquisition announcement had expected the transaction to close in the third quarter of 2026; the new release confirms completion.

The acquisition is part of Infineon’s effort to broaden its capabilities across the power chain supplying data centres. The company says its portfolio includes silicon, silicon-carbide and gallium-nitride power semiconductors, alongside vertical power-delivery architectures. It is also looking toward future substrate-integrated voltage regulators, which the release describes as a development direction rather than a current commercial product. Rising electricity requirements from AI facilities are prompting supplier investment, but the acquisition alone does not establish a measured improvement in total system efficiency or an amount of new data-centre capacity.

The companies did not publish milestones for integration or a date when C2i’s team might affect product-development schedules. Assessing outcomes will require later product announcements, evidence of customer adoption and technical performance information. The current release confirms the ownership change and areas of expertise; it does not report a deployment, delivery or power saving at a specific data centre.