Power converter

A power converter comprising:

• a circuit board including an insulating substrate and a first coil conductor, the insulating substrate including a first main surface, a second main surface opposite to the first main surface, a first side surface, and a second side surface opposite to the first side surface, the first side surface and the second side surface each connecting the first main surface to the second main surface, the first coil conductor being provided on at least one of the first main surface or the second main surface;
• a first magnetic core including a first magnetic core member and a second magnetic core member;
• a second magnetic core including a third magnetic core member and a fourth magnetic core member;
• and
• a housing that accommodates the circuit board, the first magnetic core and the second magnetic core, wherein
• the first coil conductor extends to surround a part of the first magnetic core,
• the housing includes a first portion,
• the first side surface is opposed to the first portion and is spaced away from the first portion, and
• the first magnetic core member and the second magnetic core member are both thermally connected to the first portion,
• the third magnetic core member includes a fifth surface opposed to the first portion and a seventh surface opposite to the fifth surface,
• the fourth magnetic core member includes a sixth surface opposed to the first portion and an eighth surface opposite to the sixth surface,
• each of the third magnetic core member and the fourth magnetic core member has a smaller size than a corresponding one of the first magnetic core member and the second magnetic core member in a direction in which the fifth surface and the seventh surface are spaced away from each other,
• the circuit board further includes a second coil conductor, the second coil conductor being provided on at least one of the first main surface or the second main surface,
• the second coil conductor extends to surround a part of the second magnetic core, and
• the third magnetic core member and the fourth magnetic core member are both thermally connected to the first portion.

A power converter comprising:

• a circuit board including an insulating substrate and a first coil conductor, the insulating substrate including a first main surface, a second main surface opposite to the first main surface, a first side surface, and a second side surface opposite to the first side surface, the first side surface and the second side surface each connecting the first main surface to the second main surface, the first coil conductor being provided on at least one of the first main surface or the second main surface;
• a first magnetic core including a first magnetic core member and a second magnetic core member;
• a second magnetic core including a third magnetic core member and a fourth magnetic core member;
• a second pressing portion;
• and
• a housing that accommodates the circuit board, the first magnetic core and the second magnetic core, wherein
• the first coil conductor extends to surround a part of the first magnetic core,
• the housing includes a first portion,
• the first side surface is opposed to the first portion and is spaced away from the first portion, and
• the first magnetic core member and the second magnetic core member are both thermally connected to the first portion,
• the circuit board further includes a second coil conductor, the second coil conductor being provided on at least one of the first main surface or the second main surface,
• the second coil conductor extends to surround a part of the second magnetic core,
• the third magnetic core member includes a fifth surface opposed to the first portion and a seventh surface opposite to the fifth surface,
• the fourth magnetic core member includes a sixth surface opposed to the first portion and an eighth surface opposite to the sixth surface,
• each of the third magnetic core member and the fourth magnetic core member has a smaller size than a corresponding one of the first magnetic core member and the second magnetic core member in a direction in which the fifth surface and the seventh surface are spaced away from each other,
• a relative position of the second magnetic core to the circuit board is adjustable in the direction, and
• the second magnetic core is pressed by the second pressing portion toward the first portion to thermally connect both of the third magnetic core member and the fourth magnetic core member to the first portion.