Switching power supply module

A switching power supply module comprising:

• a first circuit board on which a switching element is mounted;
• a second circuit board on which at least one of an input capacitor and an output capacitor is mounted;
• and
• a power inductor that electrically connects the switching element and the output capacitor, wherein
• the power inductor is between the first circuit board and the second circuit board,
• the power inductor includes a metal conductor and a magnetic core, the magnetic core encloses the metal conductor, and in an enclosed portion the metal conductor and the magnetic core are in close contact with each other to configure an integrated structure,
• the metal conductor includes
• a main body portion enclosed in the magnetic core,
• a first end portion that is not enclosed in the magnetic core and that configures a first terminal of the power inductor at one end of the main body portion, and
• a second end portion that is not enclosed in the magnetic core and configures a second terminal of the power inductor at another end of the main body portion,
• the first end portion extends from the main body portion to the first circuit board and is physically and electrically connected to the first circuit board,
• the second end portion extends from the main body portion to the second circuit board and is physically and electrically connected to the second circuit board, and
• a structure in which the first end portion of the power inductor is connected to the first circuit board and a structure in which the second end portion is connected to the second circuit board
• configure a three-dimensional structure in which a volumetric packing density of electronic components is increased, and
• increase a mounting density of electronic components in a volume space by causing a closed current path through which a switching current flows to be substantially orthogonal to the first circuit board and the second circuit board and causing a magnetic flux loop generated by the switching current to be substantially parallel to the first circuit board and the second circuit board, and control a direction of magnetic flux generated by the switching current.