Chinese EV components supplier Suzhou Inovance Automotive Systems and gallium nitride (GaN) power device manufacturer Innoscience (Suzhou) Technology have integrated their 6.6 kW onboard charger (OBC) system powered by 650 V GaN devices.

The two-in-one power system integrates the OBC and the DC-DC converter. The optimized architecture and Innoscience’s high-voltage GaN devices, which feature ultra-low switching loss and high-frequency performance, deliver a 30% increase in power density, reaching 4.8 kW/L. The system also offers a 2% improvement in overall efficiency compared with similar products and a 20% reduction in system weight, Innoscience said.

The jointly developed OBC optimizes internal vehicle packaging by saving space and enhancing integration flexibility at the vehicle level.

“The successful deployment of the GaN-based OBC system in Changan vehicles is a milestone for GaN applications in automotive power systems, representing a breakthrough and a foundational step for both Inovance Automotive and Innoscience in the electric vehicle sector,” Innoscience said.

Source: Innoscience