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Semiconductors for Compact and Cost-Efficient on-Board Chargers

MARTIN GLEICH | Sr Manager Mktg & BD Powertrain | Automotive Division, Infineon Technologies

On-board chargers (OBC) are required in any fully electric or plug-in hybrid vehicle. This article explains what factors are important in the development of an OBC and how these can be achieved with suitable semiconductor components.

Battery electric and plug-in hybrid vehicles will shape the street scape much more strongly in the next few years than they do today. Since these vehicles have no, or very low, local CO2 emissions according to WLTP, manufacturers are increasingly relying on the sales of these vehicles in order to achieve the CO2 emission targets in the EU.

Both types of vehicles use lithium-ion battery packs with nominal voltages typically in the range of 350V – 360V. Today the battery capacities of new electric vehicles are between 40kWh and 80kWh, allowing ranges up to 400km. Plug-in hybrid vehicles integrate smaller battery packs that are around 10kWh since the pure electrical range usually does not exceed 50km.

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