Power supply device

A power supply device comprising:

• a housing that has a base plate, the base plate having a flat portion with a flat surface,
• a protrusion section protruding upward from the flat surface of the base plate, at least a portion of an outer upper surface of the protrusion section being constituted by a flat protrusion surface,
• wherein a thermal conductive material having fluidity is provided on the protrusion surface,
• a stepped section is formed at a sidewall of a circumferential edge of the protrusion surface at a position lower than the protrusion surface and higher than the flat surface,
• the stepped section has an upper surface that is inclined or horizontal with respect to the base plate as the stepped section extends away from the sidewall, and the stepped section has a width configured to accommodate overflow of the thermal conductive material from the protrusion surface and not to accommodate an electronic component, and
• the base plate has a screw hole, and the stepped section is installed at the sidewall of the screw hole side.

A power supply device comprising:

• a housing that has a base plate, the base plate having a flat portion with a flat surface,
• a protrusion section protruding upward from the flat surface of the base plate, at least a portion of an outer upper surface of the protrusion section being constituted by a flat protrusion surface,
• wherein a thermal conductive material having fluidity is provided on the protrusion surface,
• a stepped section is formed at a sidewall of a circumferential edge of the protrusion surface at a position lower than the protrusion surface and higher than the flat surface,
• the stepped section has an upper surface that is inclined or horizontal with respect to the base plate as the stepped section extends away from the sidewall, and the stepped section has a width configured to accommodate overflow of the thermal conductive material from the protrusion surface and not to accommodate an electronic component,
• the base plate has a core placing surface on which a magnetic core is placed, and
• a groove section is formed around the core placing surface.