| 摘要 |
PROBLEM TO BE SOLVED: To provide a power conversion circuit which effectively reduces magnetic coupling between a coil and a conductor part.SOLUTION: A power conversion circuit comprises: at least one active element which contributes to power conversion; a coil 3; a capacitor which composes a noise filter together with the coil 3; and a substrate pattern 21 in which a loop surface is formed on one plane and which serves as a "conductor part" for electrically connecting circuit components including at least some of active elements. The substrate pattern 21 is arranged at a position with respect to the coil 3, capable of avoiding interlinkage of leakage flux generated peripherally from the coil 3 with the loop surface. For example, in the case where the coil 3 is a single-axis coil 3 in which a conducting wire is wound around one coil axis Ac, the substrate pattern 21 is arranged on the same plane with the coil axis Ac. With this composition, magnetic coupling of the coil 3 and the substrate pattern 21 can be reduced effectively.SELECTED DRAWING: Figure 2 |
