onsemi has put forward "GaN across all voltage ranges"
At PCIM Europe 2026, onsemi introduced "GaNEXUS," a platform for GaN (gallium nitride) power products, making its full-scale entry into GaN clear (Power Electronics News PCIM 2026 interview). What matters is that this is not a single-product launch. onsemi is combining external foundry and GaN specialist partnerships to expand across voltage ranges from low voltage to 650V.
In AI server power supplies and in-rack DC-DC conversion, GaN adoption is expanding because high switching frequency can shrink passive components. onsemi's move is one example of supply-side realignment toward the growing demand area of data-center power.
650V with GlobalFoundries, 40-200V with Innoscience
onsemi has announced two collaborations.
One is 650V GaN with GlobalFoundries. The partnership combines onsemi's system, product, and packaging technologies with GlobalFoundries' 650V GaN process to supply devices with high power density and efficiency. Samples are planned for the first half of 2026, and target applications include AI data-center power supplies and DC-DC converters, EV onboard chargers, solar microinverters, and energy storage (onsemi official investor release).
The other is a collaboration with Innoscience (MoU) targeting 40-200V low-voltage GaN. onsemi will combine its integration and packaging technology with Innoscience's mass-production GaN technology, with sampling also expected to begin in the first half of 2026 (onsemi official investor release). onsemi has also mentioned sampling vertical GaN, showing a posture of pursuing GaN from low voltage to high voltage in all directions.
650V: GlobalFoundries collaboration
GF's 650V GaN process plus onsemi's driver, control, and packaging. Applications include AI data-center power and DC-DC, EV onboard chargers, solar, and storage.
40-200V: Innoscience collaboration (MoU)
Innoscience's production GaN plus onsemi's integration and packaging. The partnership accelerates low-voltage GaN deployment, with samples expected in H1 2026.
Vertical GaN: internal samples
onsemi has also mentioned vertical GaN sampling, forming a lineup aimed from low voltage through high withstand voltage.
Why "all ranges": the contest for data-center power
GaN's strength is high-frequency, high-density power conversion in the 650V-and-below range. Conversion stages inside AI-server PSUs and in-rack DC-DC sit squarely in this area. Even as 800V DC progresses, GaN has large room for adoption in the final high-frequency step-down stage (the 800V DC transition is discussed in a related article).
onsemi's simultaneous partnerships with an external foundry, GlobalFoundries, and a specialist, Innoscience, can be read as an attempt to secure supply and voltage coverage quickly against demand that cannot be met by its own fabs alone. In the GaN market, Navitas, Innoscience, Infineon, and others are already ahead or competing, and supplier-side competition for the expanding data-center power segment is intensifying.
From a procurement and design perspective, samples are scheduled for the first half of 2026, so measurement on evaluation boards and qualification are only now entering the main phase. For companies adopting GaN in AI data-center power supplies, the practical meaning is that an environment is forming where 650V and low-voltage devices from multiple suppliers can be evaluated side by side.