EMC filter for electromagnetic regulation of converter and manufacturing method thereof

An electro-magnetic compatibility (EMC) filter comprising:

• a lower bobbin having a U-shaped cross-sectional shape;
• a lower core having a magnetic material, having a U-shaped cross-sectional shape, and disposed on the lower bobbin;
• a bus bar disposed on the lower core;
• an upper bobbin having a plate-like shape and configured to cover an covering upper portion of the lower bobbin;
• and
• an upper core having a magnetic material, having a plate-like shape, disposed on a lower surface of the upper bobbin, and disposed on the lower core with a gap maintained by the bus bar when the lower bobbin and the upper bobbin are coupled to each other,
• wherein the bus bar includes:
• a first bus bar disposed in a space defined by the U-shaped cross-sectional shape of the lower core and including an upper surface extending below a height level of a portion of the lower core overlapping the gap;
• and
• second and third bus bars overlapping and extending from respective upper end surfaces of two ends of the first bus bar in opposite directions, wherein the first bus bar and the second or third bus bar are stacked on each other, such that the first bus bar is in contact with a portion of the lower core that overlaps the bus bar, and the second or third bus bar is in contact with a lower surface of the upper core.