Patent ID: 9713292
Date: 2017-07-18
CPC Classifications: H01H,H01L,H02M,H05K

Claim:
1. A DC-DC converter comprising: a transformer for converting voltages; a plurality of switching elements for controlling a current flowing through the transformer; a metal radiator; a metal case for housing the transformer, the switching elements, and the radiator; and a refrigerant channel through which a cooled-down refrigerant flows, wherein the refrigerant channel is disposed on the outer surface of the case, wherein the radiator is formed so that the heat conductivity of the radiator is higher than that of the case, wherein the radiator is disposed on the inner surface of the case directly or via a heat conductive member so that the radiator faces the refrigerant channel with the case between the radiator and the channel, wherein the switching elements includes a first switching element and a second switching element, and wherein, in the case where the first switching element is projected in a direction normal to a surface on which the switching elements are disposed and that is a surface of the radiator, the first switching element is disposed on the radiator via an insulating member so that the projected part of the first switching element is overlapped with the projected part of the refrigerant channel, and the second switching element is disposed on the radiator via an insulating member so that the projected part of the second switching element is prevented from being overlapped with the projected part of the refrigerant channel.