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On-Board-Charging (OBC) System


On-Board-Charging system is used to charge the High Voltage Batteries in the vehicle from AC power grid. The charging system converts the power from AC to DC and adjusts the charging currents and voltages based on the information from Battery Management System (BMS).

Sumida products, including power transformers and inductors, are industrial standard solutions in OBC systems.

  • Common-mode-choke

  • LLC Transformer

  • Fly-back Transformer