Cooling structure for electronic circuit component and inverter apparatus using the same

摘要

A cooling structure for a shunt resistor has a semiconductor switching element mounted on a component side of a circuit board, a shunt resistor surface-mounted a solder side of the circuit board, a radiator for releasing heat generated from the semiconductor switching element and the shunt resistor, and an insulating material interposed between the shunt resistor and the radiator and having a high thermal conductivity.

主权项

1. A cooling structure for an electronic circuit component, comprising:
a semiconductor switching element mounted on a component side of a circuit board; a shunt resistor surface-mounted on a solder side opposite to the component side of the circuit board and including a metal lead terminal and a resistor; a radiator provided on the solder side of the circuit board and configured to release heat generated from the shunt resistor; and an insulating material interposed between the shunt resistor and the radiator and having a high thermal conductivity, wherein the heat generated from the semiconductor switching element is released from the radiator through the insulating material, wherein the heat generated from the shunt resister is released through a heat transfer passage, wherein the heat is transferred from the resistor to the radiator through the heat transfer passage in which the heat from the resistor is directly transferred via the insulating material to the heat sink.