A nano-composite polyamide imide passivation for 10 kV power electronics modules

High current and voltage handling capabilities are desired in many high-performance power electronic modules. One of the main challenges when integrating a power module is having a high-voltage insulation material that is reliable at all operating temperatures. In this work, the use of a polyamide imide (PAI) material as the high-voltage passivation for the power electronic modules was investigated. The power modules were integrated with a two-step passivation-encapsulation process using the PAI material. The fabricated modules were tested up to 10 kV to evaluate the material insulation properties.