Subaru Corporation puts onsemi’s Embedded Power Platform to the test for future electrified vehicles

Early evaluation, before architectures harden

Subaru Corporation has entered a technology engagement with onsemi to evaluate the Embedded Power Platform (EPP) for future electrified vehicles. The point is not a finished product announcement; it is earlier and, for engineers, more consequential. Subaru will assess how more integrated power design could benefit future vehicle programmes while those programmes still have room to change.

The work draws directly on onsemi’s modelling, simulation and engineering expertise. It also builds on an existing working relationship between Subaru and onsemi, which matters because evaluation speed often depends on how quickly supplier and OEM teams can exchange assumptions, constraints and test data.

Integration at the silicon level

EPP uses the silicon wafer itself as the package to integrate electrical, thermal and mechanical design within a single device. For electrified vehicle traction inverters, the platform could support smaller, lighter and more efficient systems. Just as important for platform planning, EPP enables a single architecture to scale across multiple power levels.

That combination is the engineering hook: fewer compromises between package, cooling and electrical performance, plus a path to reuse architecture rather than redesigning for every output band.

What each side gets

For onsemi, the engagement provides practical customer insight to guide EPP’s continued development. Sampling is expected across automotive and AI applications later in 2026.

“Advancing our electrification strategy requires us to continually assess technologies that can improve vehicle performance, efficiency and system integration. Our early engagement with onsemi gives us an opportunity to evaluate EPP’s integrated approach to power system design while drawing on onsemi’s modelling, simulation and engineering expertise. We are encouraged by the platform’s potential and look forward to continuing our technical engagement as we develop future electrified-vehicle architectures.”

— Tamotsu Inui, Managing Executive Officer, Subaru Corporation

The measured takeaway: this is an evaluation, not a commitment. But the focus is specific—traction inverters, scalable power levels, and packaging that treats the wafer as part of the system rather than an afterthought.