Automotive zonal architecture

Accelerate your Software-Defined Vehicle design with scalable zone architecture solutions that unify power distribution, gateway, and load actuation.

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How automotive zonal architecture reduces hardware complexity

The automotive industry is undergoing a fundamental shift from traditional domain-based E/E architectures to innovative automotive zonal architectures — driven by the need to reduce hardware and software complexity.

At the heart of this transformation is the Zone Control Unit (ZCU): a regional hub that consolidates communication, power distribution and conversion, load actuation, and sensing within a defined physical zone of the vehicle. Functions previously distributed across separate modules — such as the Body Control Module (BCM) and gateway — are consolidated into fewer, strategically positioned ZCUs.

This shift manifests in two layers: in the hardware, through a decentralized and electrified power distribution system (PDS); and in the software, through an In-Vehicle Network enabling a centralized Service-Oriented Architecture (SOA).

Zone Control Unit (ZCU) solutions
Software-Defined Vehicle (SDV) technology

From distributed ECUs to an SDV-enabling In-Vehicle Network

Modern vehicles are undergoing a fundamental shift in their electrical/electronic (E/E) architecture. Traditional decentralized designs — built around numerous distributed ECUs — are giving way to increasingly centralized, software-centric configurations.

This transition is a key enabler for Software-Defined Vehicles (SDVs), where features are delivered and updated through software rather than hardware changes. A critical aspect is the adoption of Service-Oriented Architectures (SOAs), where vehicle functions are exposed as independent, reusable software services — enabling flexible communication and seamless integration across zones.

At the heart of this evolution is the automotive zonal architecture, where vehicle functions are organized by physical location rather than by domain. Zone Control Units act as regional hubs, aggregating local actuation and sensor data, executing computing tasks, and routing information all the way to the Central Compute Unit (CCU). 

Zone Control Unit (ZCU) solutions
Software-Defined Vehicle (SDV) technology

Decentralization and electrification of automotive power distribution

Automotive power distribution systems control the transport of low-voltage electric energy from source to load. Traditional centralized architectures are giving way to innovative zonal E/E designs that dramatically reduce wiring complexity, weight, and cost.

In a vehicle zonal architecture, power distribution is decentralized and integrated directly into strategically positioned zone controllers throughout the vehicle. This moves power management closer to electrical loads, significantly reducing wire lengths and system complexity.

The key enabler of this transformation is advanced semiconductor technology: software-resettable semiconductor switches replace traditional mechanical fuses, eliminating the need for accessible fuse boxes and enabling remote fault management. The result is a more intelligent, compact, and cost-effective power distribution system that supports the evolving electrical demands of modern vehicles. 

Automotive power distribution unit solutions
PROFET™ smart power switches

Flexibility, scalability, and efficiency in automotive zonal design

Automotive zonal architecture delivers significant advantages for vehicle manufacturers and drivers alike. By consolidating functions into local Zone Control Units, OEMs can dramatically reduce wire harness complexity while laying the technical foundation for Software-Defined Vehicle (SDV) use cases.

A central benefit is the decoupling of software and hardware development: software can evolve independently, enabling faster iteration cycles and faster time-to-market for new features delivered via Software-Over-The-Air (SOTA) updates.

Zonal designs further simplify system integration by replacing point-to-point ECU dependencies with well-defined interfaces and communication standards — creating a strong foundation for platform standardization across vehicle lines and model generations, with shared software stacks and reusable hardware platforms.

Finally, zone architecture supports scalability: the same fundamental design can be adapted across vehicle segments and feature levels, reducing development effort and enabling faster response to evolving market requirements.

Zone Control Unit (ZCU) solutions
Software-Defined Vehicle (SDV) technology

Integrating zonal 48 V/12 V DC-DC conversion into zone architecture

The growing integration of new vehicle functions and increasing user experience demands are pushing the limits of traditional 12 V low-voltage networks — especially in Battery Electric Vehicles (BEVs).

Introducing 48 V in the automotive zonal architecture enables efficient distribution of higher power levels, reducing wiring harness weight and complexity. While first higher-power loads are already migrating to 48 V, not all vehicle loads will make this transition simultaneously.

Zone architecture intelligently integrates both 48 V and 12 V systems within a single vehicle platform. High-power 48 V loads receive direct supply from the 48 V battery for optimal efficiency, while remaining 12 V loads continue to operate through decentralized supply via zone controllers — preserving compatibility with existing automotive systems.

At the heart of this solution lies an integrated 48 V/12 V DC-DC converter built directly into each zone controller, enabling seamless coexistence of both voltage domains. 

48 V/12 V zonal DC-DC converter solutions
48 V power distribution solutions

How automotive zonal architecture reduces hardware complexity

The automotive industry is undergoing a fundamental shift from traditional domain-based E/E architectures to innovative automotive zonal architectures — driven by the need to reduce hardware and software complexity.

At the heart of this transformation is the Zone Control Unit (ZCU): a regional hub that consolidates communication, power distribution and conversion, load actuation, and sensing within a defined physical zone of the vehicle. Functions previously distributed across separate modules — such as the Body Control Module (BCM) and gateway — are consolidated into fewer, strategically positioned ZCUs.

This shift manifests in two layers: in the hardware, through a decentralized and electrified power distribution system (PDS); and in the software, through an In-Vehicle Network enabling a centralized Service-Oriented Architecture (SOA).

Zone Control Unit (ZCU) solutions
Software-Defined Vehicle (SDV) technology

From distributed ECUs to an SDV-enabling In-Vehicle Network

Modern vehicles are undergoing a fundamental shift in their electrical/electronic (E/E) architecture. Traditional decentralized designs — built around numerous distributed ECUs — are giving way to increasingly centralized, software-centric configurations.

This transition is a key enabler for Software-Defined Vehicles (SDVs), where features are delivered and updated through software rather than hardware changes. A critical aspect is the adoption of Service-Oriented Architectures (SOAs), where vehicle functions are exposed as independent, reusable software services — enabling flexible communication and seamless integration across zones.

At the heart of this evolution is the automotive zonal architecture, where vehicle functions are organized by physical location rather than by domain. Zone Control Units act as regional hubs, aggregating local actuation and sensor data, executing computing tasks, and routing information all the way to the Central Compute Unit (CCU). 

Zone Control Unit (ZCU) solutions
Software-Defined Vehicle (SDV) technology

Decentralization and electrification of automotive power distribution

Automotive power distribution systems control the transport of low-voltage electric energy from source to load. Traditional centralized architectures are giving way to innovative zonal E/E designs that dramatically reduce wiring complexity, weight, and cost.

In a vehicle zonal architecture, power distribution is decentralized and integrated directly into strategically positioned zone controllers throughout the vehicle. This moves power management closer to electrical loads, significantly reducing wire lengths and system complexity.

The key enabler of this transformation is advanced semiconductor technology: software-resettable semiconductor switches replace traditional mechanical fuses, eliminating the need for accessible fuse boxes and enabling remote fault management. The result is a more intelligent, compact, and cost-effective power distribution system that supports the evolving electrical demands of modern vehicles. 

Automotive power distribution unit solutions
PROFET™ smart power switches

Flexibility, scalability, and efficiency in automotive zonal design

Automotive zonal architecture delivers significant advantages for vehicle manufacturers and drivers alike. By consolidating functions into local Zone Control Units, OEMs can dramatically reduce wire harness complexity while laying the technical foundation for Software-Defined Vehicle (SDV) use cases.

A central benefit is the decoupling of software and hardware development: software can evolve independently, enabling faster iteration cycles and faster time-to-market for new features delivered via Software-Over-The-Air (SOTA) updates.

Zonal designs further simplify system integration by replacing point-to-point ECU dependencies with well-defined interfaces and communication standards — creating a strong foundation for platform standardization across vehicle lines and model generations, with shared software stacks and reusable hardware platforms.

Finally, zone architecture supports scalability: the same fundamental design can be adapted across vehicle segments and feature levels, reducing development effort and enabling faster response to evolving market requirements.

Zone Control Unit (ZCU) solutions
Software-Defined Vehicle (SDV) technology

Integrating zonal 48 V/12 V DC-DC conversion into zone architecture

The growing integration of new vehicle functions and increasing user experience demands are pushing the limits of traditional 12 V low-voltage networks — especially in Battery Electric Vehicles (BEVs).

Introducing 48 V in the automotive zonal architecture enables efficient distribution of higher power levels, reducing wiring harness weight and complexity. While first higher-power loads are already migrating to 48 V, not all vehicle loads will make this transition simultaneously.

Zone architecture intelligently integrates both 48 V and 12 V systems within a single vehicle platform. High-power 48 V loads receive direct supply from the 48 V battery for optimal efficiency, while remaining 12 V loads continue to operate through decentralized supply via zone controllers — preserving compatibility with existing automotive systems.

At the heart of this solution lies an integrated 48 V/12 V DC-DC converter built directly into each zone controller, enabling seamless coexistence of both voltage domains. 

48 V/12 V zonal DC-DC converter solutions
48 V power distribution solutions
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