Subaru to evaluate onsemi's Embedded Power Platform for future EVs
Subaru has entered a strategic technology engagement with onsemi to evaluate its Embedded Power Platform (EPP), a power-integration technology aimed at future electrified vehicles.
- September 16, 2026
What Happened
onsemi announced a strategic technology engagement with Subaru Corporation to evaluate its Embedded Power Platform, or EPP. The engagement gives Subaru early access to EPP technology, engineering samples, simulation models and onsemi engineering expertise. Subaru will use that access to assess how a more integrated approach to power system design could improve efficiency, simplify development and support future vehicle architectures. The work targets next-generation power architectures for future electrified vehicles.
“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 modeling, 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.”
EPP is described as a breakthrough power platform that enables more power in less space by embedding multiple semiconductor devices directly into a silicon-based wafer-level package. It transforms the package from a passive housing into an active contributor to electrical and thermal performance. That allows a new class of highly integrated power systems designed for the growing demands of vehicle electrification. For future electrified vehicles, EPP has the potential to support smaller, lighter and more efficient traction inverter systems while reducing development complexity and accelerating time to market.
- Smaller, lighter and more efficient traction inverter systems
- Reduced development complexity and faster time to market
- Scalability across multiple power levels using a common architecture
- Reduced engineering effort and minimized requalification costs
- Accelerated development cycles and a faster path from concept to production
- Lower development costs and greater flexibility across future vehicle programs
“The transition to electrification is driving increasingly sophisticated vehicle architectures and placing growing pressure on automakers to improve efficiency, simplify development and accelerate innovation. That is creating an opportunity to rethink power systems from the ground up. Subaru's engagement brings valuable customer insight to EPP's continued evolution, using the platform in advanced customer systems and exploring how its integrated power architecture would support the next generation of electrified vehicles.”
The companies say the early technical collaboration builds on a longstanding relationship between Subaru and onsemi. The initial phase focuses on early engineering evaluation and technical learning. The two are exploring advances in power-semiconductor integration that can translate into scalable system-level solutions meeting the performance, efficiency and thermal demands of next-generation mobility. onsemi also gains practical customer insights to support the continued development of EPP.
Why this matters
Power electronics play an increasingly important role in vehicle performance, efficiency and design flexibility as automakers expand their electrified line-ups, so the power architecture an automaker chooses affects how efficiently and quickly future EVs can be developed. The engagement gives Subaru early access to EPP technology and engineering expertise, while giving onsemi customer insight to keep developing the platform.
Terms in This Story
- Power semiconductor
- A chip that controls and converts electrical power, used in systems such as traction inverters.
- Traction inverter
- An electronic device in an electrified vehicle that converts electrical power into the current used to drive the vehicle's motor.
- Embedded Power Platform (EPP)
- onsemi's power platform that embeds multiple semiconductor devices directly into a silicon-based wafer-level package.
- Wafer-level package
- A way of packaging semiconductor devices at the wafer stage of chip manufacturing.
Summarised from the linked release; details can be imperfect — always verify against the original source.