Visteon-Shinry and Infineon are developing a single-stage GaN onboard charger

Visteon-Shinry Power Electronics (VSPE), a joint venture of Visteon and SHINRY Technologies, is working with Infineon Technologies to develop a single-stage onboard charger for EVs based on Infineon’s gallium nitride (GaN) monolithic bidirectional switches.

The design combines VSPE’s converter hardware topology, proprietary control strategy and system integration expertise with Infineon’s switches. The single-stage architecture merges power conversion functions traditionally performed by separate stages and eliminates the bulk capacitors found in conventional two-stage OBCs. The companies say the approach improves reliability, reduces system complexity, enables more compact packaging and lowers cost.

The charger is designed to support 22 kW three-phase and 19.2 kW single-phase AC charging. It also has vehicle-to-everything (V2X) bidirectional capability, which enables grid interaction.

Infineon’s monolithic GaN devices integrate bidirectional voltage blocking and current conduction into a single device. Infineon says bidirectional switching functions can therefore be implemented with fewer semiconductor components. GaN’s high-frequency switching also helps increase power density and reduce the size of magnetic components.

“Integrating Infineon’s GaN switches with our proprietary single-stage topology is a game-changer for power density and system cost,” said Mark Sun, CTO of SHINRY. “Our R&D team is fully committed to validating this innovative architecture to meet the rigorous reliability standards of global automotive customers.”

“Our GaN bidirectional switch, recognized as a ‘Global New Energy Vehicle Innovative Technology’ at the 2026 World New Energy Vehicle Congress, combines leading-edge switching performance and efficiency with a new level of semiconductor integration, enabling new power conversion architectures,” said Benoit Rousseau, Vice President of GaN Automotive at Infineon.

Source: Infineon Technologies