SiC Solid-State Power Contactors SSPC`s in Comparison to E-Fuses and Solid-State Circuit Breakers

Abstract

Maik Hohmann

In this work, the novel approach of a DC protection system based on an all-solid-state semiconductor PCB solution was presented. The switching element, called the "solid-state power contactor - SSPC", is implemented as a circuit board. Modern system integration technologies are used here. The focus is on circuit board technologies that distribute the power losses of the semiconductors in a targeted manner on the circuit board and can very quickly reduce high temperature gradients in the semiconductors in critical operating conditions. There are fundamental differences between the three systems E-Fuse, SSCB and SSPC, depending on their intended use. This is why E-Fuse is primarily considered a fuse replacement system, SSCB as an on/off switching device and the SSPC presented here as a protective device for functional safety must enable "safe disconnection and switching". In addition, the naming E- Fuse, SSCB or SSPC are not absolute.

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