C2i Semiconductors

Semiconductors · AI Infrastructure · Power Management

Acquisition

Infineon completes acquisition of C2i Semiconductors in Bengaluru

Owning the control software alongside the chips lets Infineon tune power delivery as a single system rather than stitching together separate vendors.

• Infineon Technologies completed its acquisition of Bengaluru-based C2i Semiconductors, with the deal first announced in August 2026 and closing October 5, 2026; financial terms were not disclosed.
• C2i builds software-defined multiphase controllers, smart power stages and digital control technology that manage the rapidly shifting power demands of AI processors.
• C2i's roughly 2,800-person engineering team joins Infineon's Power Systems division, combining its digital controls with Infineon's silicon, silicon carbide and gallium nitride power devices.
• The companies will jointly develop vertical power delivery architectures, including future Substrate Integrated Voltage Regulators that move voltage regulation physically closer to AI processor dies.
• AI accelerators swing rapidly between idle, memory-heavy and compute-heavy states, creating steep current transients that power regulators must follow without breaching narrow processor voltage tolerances.
• Pairing the control software with the power semiconductors under one roof lets Infineon engineer grid-to-core power delivery as a single system, a capability chipmakers increasingly need as AI data center power density climbs.
• The deal deepens Infineon's R&D footprint in India, positioning Bengaluru as a continuing development hub within its global power engineering network.