Transformer bobbin assembly with integrated fins

A transformer comprising:

• a core having a first limb, a second limb, a first yoke, and a second yoke forming a magnetic flow path;
• a bobbin assembly including a first bobbin mounted to the first limb, and a second bobbin mounted to the second limb, wherein each of the first bobbin and the second bobbin includes
• a first bobbin member including a first end defining a first opening, a second end defining a second opening, an inner surface defining the first opening and an outer surface, the inner surface including a first plurality of fins that extend between the first end and the second end;
• and
• a second bobbin member disposed about and spaced from the first bobbin member, the second bobbin member including a first end portion defining a first opening portion, a second end portion, an inner surface portion and an outer surface portion, wherein one of the outer surface of the first bobbin member and the outer surface portion of the second bobbin member includes a second plurality of fins that extend between the first end portion and the second end portion.