Patent ID: 6961244
Filing Date: 2005-11-01
Classification: H02M,H05K

Abstract:
1. A switching power supply, comprising: a switching element which constitutes a switching circuit for converting an input voltage from a direct current into an alternating current; a main transformer which performs voltage transformation on the input voltage converted into the alternating current by the switching circuit; a rectifier which constitutes a rectifier circuit for converting, from the alternating current into a direct current, the input voltage on which the voltage transformation is performed by the main transformer; and a choke coil which constitutes a smoothing circuit for filtering the input voltage converted into the direct current by the rectifier circuit, all of the switching element, the main transformer, the rectifier and the choke coil being mounted on a base plate, wherein the base plate includes a pedestal portion higher than surrounding regions thereof, at least any of the switching element and the rectifier is mounted on the pedestal portion of the base plate, the choke coil is higher than the switching element and the rectifier, and mounted in a region other than a region where the pedestal portion is formed within a region on the base plate, and a coolant channel through which coolant flows is formed inside the pedestal portion.