Power modules for the next chapter of electromobility

• Power modules in the traction inverter are becoming a decisive factor for efficiency, power density, and the scalability of electric drivetrains.
• Modern power modules must cover a wide range of power and voltage levels, enable high power density, and support different inverter topologies in order to serve various vehicle classes and system architectures.
• Bosch addresses these requirements with a SiC-based power module portfolio, particularly with the PM6 family for high-performance high-voltage architectures and the DSL family for flexible solutions and circuit topologies.

The industrial scaling of electromobility is presenting manufacturers with new challenges: Electric vehicles must reach the market faster, be produced in higher volumes, and remain cost-efficient; all while global competition intensifies and stable supply chains become increasingly important. These conditions directly affect key components of the electric powertrain, especially the power modules used within.

Modern power modules must meet demanding requirements to be scalable across vehicle classes. They need to cover a broad range of power and voltage levels: from compact vehicles with around 80 kW of drive power to high-performance vehicles exceeding 400 kW, and from conventional 400 V systems to 800 V architectures and potentially even 1,200 V systems in the future. Only in this way can different vehicle classes and platforms be efficiently served using the same technology.

At the same time, pressure is increasing to design power modules as compactly as possible. Installation space in vehicles is limited and expensive, which makes high power density one of the key characteristics of modern power modules. It enables powerful inverters to be integrated into different vehicle architectures, from compact cars to SUVs or commercial vehicles. Another factor is the growing diversity of circuit topologies. Vehicle manufacturers pursue different technical strategies, ranging from conventional B6 architectures to more efficient multilevel circuits. Modern power modules must support these approaches while providing a scalable technical foundation for a wide range of applications within the electric drivetrain.

In addition to powerful products, Bosch focuses on strong partnerships with vehicle manufacturers. A global production and development network across Europe, Asia, and the Americas enables a “local-for-local” supply strategy and helps ensure stable and resilient supply chains.

At the same time, Bosch continuously advances SiC technology. New chip generations increase efficiency and performance, while creating the foundation for future high-power applications. With its comprehensive understanding of the entire drivetrain system – from semiconductor chips to power modules and the complete electric drivetrain – Bosch also supports manufacturers in integrating the technology and bringing new vehicle concepts to market quickly.

• Wide power and voltage range: The Bosch portfolio covers applications from compact cars to premium vehicles and from 400 V to 800 V architectures, with future readiness for 1,200 V systems.
• High power density for compact inverters: Advanced SiC technology enables powerful inverters while minimizing installation space in the vehicle.
• Maximum flexibility: The Bosch portfolio supports different circuit topologies and can therefore be integrated into various technical strategies pursued by vehicle manufacturers.
• Proven reliability and global supply capability: Bosch combines robust module technology with a worldwide production and development network to ensure stable supply chains and long-term planning .