Originally, the impedance-based stability criterion was derived for systems that have a single source and load subsystem. However, the majority of large-scale systems consist of multiple paralleled devices in order to reach suitable power levels. This is the case also in data centers, where multiple PSUs are connected in parallel to feed the data processing units. To address the stability issue of paralleled devices, the impedance-based stability analysis has been extended to multi-paralleled devices [7]. Figure 3 presents a source-load equivalent of n parallel connected units, similar to Figure 2.