LAMINATED COIL ARRAY FOR DC-DC CONVERTER AND DC-DC CONVERTER

摘要

To provide a laminated coil array for DC-DC converter capable of suppressing occurrence of short-circuiting between adjacent coil conductors by reducing a potential difference between the adjacent coil conductors, and a DC-DC converter.SOLUTION: The present invention relates to a laminated coil array for DC-DC converter comprising: an element body including a magnetic layer; first and second coils which are built in the element body; and first to fourth external electrodes which are provided on a surface of the element body. A nonmagnetic layer is provided between the first coil and the second coil. An end portion pulled out of a coil conductor closest to the second coil, among coil conductors of the first coil, is connected to the fourth external electrode, and the other end portion of the first coil is connected to the third external electrode. An end portion pulled out of a coil conductor closest to the first coil, among coil conductors of the second coil, is connected to the second external electrode and the other end portion of the second coil is connected to the first external electrode. The fourth external electrode and the second external electrode are connected to an output terminal of a switching element of a DC-DC converter.SELECTED DRAWING: Figure 1A