Direct Pressed Die (DPD) Technology - a Novel Packaging Solution for Power Modules

摘要

New application fields for high power inverter systems like wind generators, hybrid cars and electrical vehicles require new ways of power electronics integration and packaging. The stringent requirements in size and weight, durability, ambient temperature, and environment are driving the power electronics beyond the limits of today's industrial applications. In industrial power modules, solder and bond wires are still the standard joining technologies of power dies today. These technologies are reaching their reliability limits when die temperatures are pushed above 175°C [2,6]. In this paper the authors will discuss how the environmental conditions drive silicon power device selection and packaging technologies. Extreme cooling conditions and high power densities require a package design that needs to work at the thermal and electrical limits of the components without making any compromise in reliability and durability.