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Onsemi SiC chips to power Volkswagen EVs

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Company will be primary provider of power system solution

Onsemi has signed a multi-year deal with Volkswagen Group to be the primary supplier of a complete power box solution as part of its next-generation traction inverter for its Scalable Systems Platform (SSP).

The design features SiC-based technologies in an integrated module that can scale across all power levels – from high power to low power traction inverters to be compatible for all vehicle categories.

“By offering a complete power system solution that encompasses the entire power sub-assembly, we provide Volkswagen Group with a single, simplified modular and scalable platform that maximises efficiency and performance for their vehicle lineup," said Hassane El-Khoury, president and CEO of Onsemi. “This new approach allows for the customisation of power needs and the addition of features for different vehicles without compromising on performance, all while reducing cost.”

Based on the EliteSiC M3e MOSFETs (pictured above), the power box solution can handle more power in a smaller package which significantly reduces energy losses, according to Onsemi. The inclusion of three integrated half-bridge modules mounted on a cooling channel will further improve system efficiency by ensuring heat is effectively managed from the semiconductor to the coolant encasement. This leads to better performance, improved heat control, and increased efficiency, allowing EVs to drive further on a single charge. By using this integrated solution, Volkswagen Group will be able to easily transition to future EliteSiC-based platforms and remain at the forefront of EV innovation.

Volkswagen will also benefit from Onsemi’s planned investment to expand its SiC manufacturing in the Czech Republic. The investment would establish an end-to-end production facility in Europe for the traction inverter power system.

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