Apparatus for energy transfer using converter and method of manufacturing same

A vehicle comprising:

• an energy storage device;
• a connection system coupleable to an external charging source and configured to utilize a first connection and a second connection, the connection system configured to:
• provide an input voltage to charge the energy storage device at a first charging rate when the energy storage device is coupled to the first connection;
• and
• provide an input voltage to charge the energy storage device at a second charging rate when the energy storage device is coupled to the second connection;
• and
• a plurality of DC converters coupleable to the connection system, the plurality of DC converters configured to:
• boost the input voltage to an intermediate voltage via a first DC converter;
• and
• buck the intermediate voltage to an output voltage via a second DC converter, the output voltage for charging the energy storage device.

A method for charging an energy storage device on-board a vehicle, the vehicle including a connection system coupleable to an external charging source and a plurality of DC converters, the method comprising:

• providing an input voltage to charge the energy storage device at a first charging rate if the energy storage device is coupled to a first connection of the connection system;
• providing an input voltage to charge the energy storage device at a second charging rate if the energy storage device is coupled to a second connection of the connection system;
• boosting the input voltage to an intermediate voltage via a first DC converter of the plurality of DC converters;
• and
• bucking the intermediate voltage to an output voltage via a second DC converter of the plurality of DC converters, the output voltage to charge the energy storage device.