HIGH POWER MODULE PACKAGE STRUCTURES

In a general aspect, a package includes a semiconductor die disposed between a first high voltage isolation carrier and a second high voltage isolation carrier. The semiconductor die is thermally coupled to the first high voltage isolation carrier. The package also includes a molding material disposed in a space between the semiconductor die and the first high voltage isolation carrier, and a conductive spacer disposed between the semiconductor die and the second high voltage isolation carrier. The conductive spacer is thermally coupled to semiconductor die and to the second high voltage isolation carrier. A longitudinal dimension of the conductive spacer is greater than a longitudinal dimension of the semiconductor die. The molding material encapsulates the semiconductor die and the conductive spacer.