New Industry Products

SiC-Based 7.4kW/11kW/22kW Onboard Battery Charger for EVs and HEVs

May 20, 2019 by Scott McMahan

BorgWarner introduces its Onboard Battery Charger (OBC), adding to the company's portfolio of technologies for plug-in hybrid and pure-electric vehicles. The OBC uses pioneering silicon carbide technology and BorgWarner says that it is the best in its class for power conversion efficiency, power density, and safety compliance.

With installation in hybrid or full EVs, the OBC converts ac from the power grid to dc for charging batteries. This technology accepts an extended range of ac inputs including 7.4kW, 11 kW, and 22kW power ratings with dc-to-dc converter rating integration from 2.3kW to 3.6kW as an option. The charger is compatible with all battery chemistries and voltages of 400V, 650V, and 800V.

"Our technical center in Lugo, Italy, is dedicated to designing onboard battery chargers that are uncompromisingly suitable for the global electric and hybrid vehicle markets," said Joel Wiegert, President and General Manager, BorgWarner Morse Systems. "We are proud that our latest offering with its silicon carbide technology provides maximum power conversion efficiency, thus saving energy and delivering an extended range for vehicle manufacturers and their customers."

BorgWarner OBCs offer broad range of charging powers and capabilities. The new OBC with a rated charging power of 7.4kW can also be used for charging powers of 6.6kW, 3.3kW, and 1.8kW and uses a single-phase supply from the power grid. The model with a rated charging power of 11kW is more efficient with its three-phase grid supply and fast charging strategy, while the onboard charger rated at 22kW delivers even more efficiency with its three-phase supply and therefore delivers much faster charging.

BorgWarner designed its OBCs to meet the standards for use in many countries and regions including the US, the EU, China, and Japan. They feature good isolation between main input and dc output, are waterproof and dustproof, have an ISO 26262 safety rating. The OBCs are housed in in a liquid-cooled IP6K96 enclosure.


  • Extended range AC input - 7.4kW, 11kW and 22kW Power Rating
  • Liquid-cooled IP6K9K enclosure
  • ISO 26262
  • Mode 2 and Mode 3 basic signal charging plugs compliant
  • On customer request CHAdeMO, CCS and GB/T with an external EVCC


  • Highest efficiency pioneering silicon carbide technology
  • Maximum performance integrated power factor correction
  • Best in class power density
  • Compatible with batteries of any chemistry: 400V, 650V and 800V voltage range
  • Isolation between Mains input and DC-output

BorgWarner says its engineering team is targeting further advances in power density, charging power, efficiency, volume weight, power factor and the adjustment of safety levels to meet various national and regional standards.