Patent ID: 8811027
Filing Date: 2014-08-19
Classification: H01L,H02M,H05K,Y02B

Abstract:
1. A DC-DC converter comprising: an insulating layer including a plurality of insulator layers; an input terminal and an output terminal provided on the insulating substrate; a first inductor that includes a magnetic material and that is provided on a first layer of the insulating substrate and is connected between the input terminal and the output terminal; a switching control unit that is provided in the insulating substrate and connected between the input terminal and the output terminal and that performs on/off control of a switching device; and a ground electrode pattern provided on a second layer of the insulating substrate; wherein the ground electrode pattern includes: the connection electrode pattern faces the first inductor and has a smaller width in a direction perpendicular or substantially perpendicular to the predetermined direction than that of the first and second electrode patterns.