Although the LTC4282 controls a single supply, it provides two parallel current-limited paths for the load current. High current hot-pluggable boards with conventional single-path controllers employ multiple parallel MOSFETs to reduce on resistance, but all of these MOSFETs require large safe operating area, or SOA, to ride through overcurrent faults since parallel MOSFETs cannot be assumed to share current during current limit. Also, MOSFET selection narrows at higher current levels, prices go up, and SOA levels do not keep up with reduced R_DS(ON). By splitting the current into two matched current-limited paths, the LTC4282 ensures that the two banks of MOSFETs share current even during current limit. The two current limits are specified to match each other within 0.25mV. For a 100A application, each path can be designed with a 50A current limit, halving the SOA requirements, widening MOSFET selection, and reducing their cost. This is called a matched configuration as both paths are designed with similar MOSFETs and sense resistors. The oscilloscope waveforms on this slide show both MOSFET gates turning on together, 50ms after the 12V input connector stops bouncing.