Overview

Infineon is expanding its collaboration with Nvidia on 800V direct-current power conversion for artificial-intelligence data centers. Under the expanded effort, Infineon will supply gallium nitride power semiconductors and control solutions for high-voltage intermediate bus converters that step down 800V to intermediate voltages used by server boards. The Elec reported the development on Oct. 26, 2026, following Infineon’s Oct. 21 local-time statement. The initiative builds on a 2025 partnership that focused on protection circuits for 800V server racks.

The new scope is technically significant because it moves Infineon from rack-level protection into the server board’s first conversion stage. Instead of only safeguarding a high-voltage rack, Infineon’s devices will help translate an 800V DC distribution rail into the lower voltages that server electronics and, eventually, GPU cores require.

The 800V Architecture and HV IBC Role

An intermediate bus converter converts the high voltage supplied to a server into an intermediate voltage used inside the board. That intermediate rail is then converted again to the voltage required by the GPU core. Infineon supports configurations that step down 800V to 50V, 12V and 6V. These are not GPU core voltages themselves; they are intermediate levels that simplify the downstream power chain.

Nvidia is developing an architecture that delivers 800V DC directly to server racks, alongside conventional alternating-current and low-voltage DC approaches, while building an ecosystem around the technology. The article states that this approach reduces power losses and wiring requirements. The HV IBC is the critical boundary between rack-level 800V distribution and board-level electronics. Its efficiency, isolation, transient response and thermal behavior influence the entire server power path.

GaN Switching and Power Density

GaN power semiconductors offer faster switching speeds and lower conversion losses than silicon. Infineon said its technology can achieve switching frequencies of up to 1MHz. Faster switching allows smaller peripheral components, including transformers and inductors, to be used. That enables higher power density within the same space, which benefits high-density AI servers where space is limited. It also reduces heat generation.

The density argument is central to AI racks. As power consumption per rack reaches megawatt levels, converters must handle more power without consuming proportionally more volume. Higher switching frequency can shrink magnetic components, but it also places demands on layout, electromagnetic interference, gate drive and thermal design. Infineon’s claim is therefore not merely about a faster device; it is about a system-level conversion approach that can fit into constrained server enclosures.

Integrated Solution and Control

Infineon will supply an integrated IBC system solution combining its GaN power semiconductors, PSoC Control C3 controllers and EiceDRIVER product family. The combination matters because GaN switching behavior depends heavily on gate-drive design and tight control. A controller, driver and power stage developed as a coordinated solution can reduce integration risk for server OEMs and power-supply designers.

The PSoC Control C3 and EiceDRIVER families are named as part of the offering, indicating that Infineon is positioning the collaboration around a complete conversion subsystem rather than discrete transistors alone. That approach can shorten design cycles and make it easier for Nvidia’s ecosystem partners to adopt 800V DC architecture.

Market Context: AI Rack Power

Growing GPU power consumption is driving interest in 800V DC systems. As AI data centers deploy large numbers of GPUs, power consumption per rack is reaching megawatt levels. Nvidia’s 800V DC work is an ecosystem play, and Infineon’s expanded role places it in the high-voltage conversion stage rather than only in protection. The collaboration also shows how power delivery is becoming a system-design constraint for AI infrastructure, not a secondary component choice.

Conventional AC and low-voltage DC approaches remain in use, according to the article. The 800V DC architecture is therefore one path within a broader transition. Its appeal lies in reduced losses and wiring at rack level, but adoption will depend on the readiness of converters, connectors, protection and server-board power stages.

Industry Impact

The announcement signals GaN’s move into higher-voltage data-center power conversion. Infineon already has a broad power-semiconductor portfolio, and the Nvidia collaboration gives its GaN and control products a demanding AI-server reference. The phased relationship—protection circuits in 2025, then HV IBCs in 2026—suggests an incremental buildout of the 800V ecosystem.

For competing power-semiconductor and converter suppliers, the deal raises the bar for integrated solutions. It also puts pressure on silicon-based approaches in the intermediate bus stage, although GaN adoption will still be judged on reliability, qualification, cost and supply. The article does not disclose volumes, pricing or production timing.

Implications for AI Data Centers

For data-center operators, GaN-based HV IBCs could improve end-to-end efficiency and power density in megawatt-scale AI racks. Smaller transformers and inductors can free space inside servers, while lower conversion losses and reduced heat generation can ease cooling constraints. Those benefits compound when many racks are deployed, although the article does not quantify them.

The 800V DC architecture also reduces wiring requirements, which matters as racks draw more power. Still, the transition will not be uniform. Operators will need to weigh compatibility with existing AC and low-voltage DC designs, serviceability and the maturity of the 800V supply chain.

Future Outlook

Infineon chief executive officer Jochen Hanebeck said: "GaN-based system solutions are a key technology for enabling next-generation data centers. Infineon is helping deliver the power required for the AI era, from grid to core." The quote frames the collaboration as part of a broader power-delivery ambition spanning rack protection, conversion and control.

The next milestones will likely involve qualification and ecosystem readiness, but the article does not specify production timing, volumes or commercial terms. The strategic direction is clear: as Nvidia builds an 800V DC ecosystem, Infineon intends to supply conversion silicon and control from the rack boundary to the server board. If the architecture scales, the collaboration could become a notable deployment of GaN in data-center power and a reference point for future AI rack designs.