I am in the process of learning about DC DC converters. What I am trying to figure out is whether inrush current is needed to maintain the input voltage at the DC-DC converter input while getting its normal operation. Say, if I have 4-5A inrush current expected for a few tens of microseconds in my setup, can I use my power supply clamps to limit the inrush current,without impeding DC-DC converter operation? I have a few feet of cable from my power supply to my fixture to test the DC-DC converter, with a Kelvin connection on my power supply. I don't yet know my load capacitance seen by the power supply at the input of the DC/DC converter. Understanding that the few long cable from power supply to the DC/DC converter has some series inductance, how can I calculate the response time of the power supply to an overcurrent situation? Please help.