High Frequency TDDB of Reinforced Isolation Dielectric Systems

Reinforced isolation provides protection of equipment and operators that interact with high voltage domains. Standards that define it have evolved over time from those that require only partial discharge to confirm reliability at the high voltage operating conditions, to those that also require a time dependent dielectric breakdown model (TDDB) for verifying reliable working voltage. In this paper we assess the impact of AC frequency, waveform, and rise and fall times on lifetime, which are important parameters that are not included in the current standards.