As consumers demand faster charging, longer ranges, and more cost-effective EVs, the role of the on-board charger (OBC) in the battery lifecycle has never been more critical.
Traditionally, EVs use a two-stage OBC architecture because it cleanly separates grid-side power quality control from battery-side isolation and regulation.
The front-stage power factor correction (PFC) rectifier shapes the AC input and produces the high-voltage DC, while the rear-stage isolated DC/DC converter provides galvanic isolation and precisely conditions the voltage for safe battery charging.
However, as 800V high-voltage platforms become mainstream and power ratings climb to 11kW and beyond, the limitations of this two-stage design, including bulk, inefficiency, and high costs, have become increasingly apparent.
Click https://www.renesas.com/en/blogs/how-board-charger-obc-and-dcdc-converter-topologies-shape-next-gen-ev-power-electronics to read more.
