3.3kW Integrated OBC and DC/DC

Designed for electric vehicles, this 400V, 3.3kW onboard charger (OBC) integrates HV-to-LV DC/DC conversion into a compact, high-power-density architecture. By using an integrated transformer, the design eliminates the need for a dedicated second transformer, reducing size, weight, and component count. The platform enables simultaneous charging of both the high-voltage traction battery and low-voltage battery, improving system efficiency and integration.

System Benefits:

• High-power-density architecture targets 1kW/L in an air-cooled design, enabling a more compact and lightweight EV charging system.
• Integrated OBC and HV-to-LV DC/DC functionality enables low-voltage battery charging during both charging and DC/DC operating modes, maximizing system utilization.