MULTILAYER COIL COMPONENT, METHOD FOR PRODUCING SAME AND DC-DC CONVERTER MODULE PROVIDED WITH SAID MULTILAYER COIL COMPONENT

摘要

A multilayer coil component which comprises a multilayer coil (L1) wherein annular conductor patterns (102a) are laminated. The multilayer coil (L1) is provided with a first coil element (L11) and a second coil element (L12), and comprises: a first multilayer substrate (10) in which the first coil element (L11) is formed; a second multilayer substrate (20) which is arranged so as to be side by side with the first multilayer substrate (10) in the lamination direction, and in which the second coil element (L12) is formed; and a conductive bonding material (30) which mechanically bonds the first multilayer substrate (10) and the second multilayer substrate (20) with each other, while electrically connecting the first coil element (L11) and the second coil element (L12) with each other. Each of the first multilayer substrate (10) and the second multilayer substrate (20) is formed by laminating a plurality of magnetic layers containing a magnetic ceramic material and conductor patterns (102a); and the first multilayer substrate (10) and the second multilayer substrate (20) are arranged at a distance from each other in the lamination direction, with the conductive bonding material (30) being interposed therebetween.