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1. A voltage conversion apparatus having a first loop circuit
and a second loop circuit which share an inductance component, in which a current passes through the first and second loop circuits alternately in accordance with an ON/OFF operation of a first switching element provided in the first loop circuit to produce a first and second area through which magnetic flux passes, wherein the first and second loop circuits are disposed in such a manner that the first and second areas through which magnetic flux passes are at least partly opposed, and a direction of a magnetic field through the first loop circuit generated at the ON operation of the first switching element in the first loop circuit is the same as a direction of a magnetic field through the second loop circuit generated at the OFF operation of the first switching element in the first loop circuit subsequent to the ON operation, the first switching element and the inductance component are disposed on a first plane where the first loop circuit is formed, the second switching element is disposed on a second plane where the second loop circuit is formed, the second plane being offset with respect to the first plane in a direction of the magnetic flux, the first plane being separate from the second plane such that the first and second loop circuits are provided on a front face and a back face of a common circuit board, respectively, or provided on a back face and a front face of a common circuit board, respectively, the first and second loop circuits are provided on a common surface of a common circuit board, and the common circuit board is folded in such a manner that the first and second loop circuits are opposed to each other in a direction of the normal to the respective loop circuits, and the opposed side of each of the first and second loop circuits is covered with an insulating layer. |
