Nch swich3/30/2024 ![]() ![]() Exceeding the maximum rated current can also result in destruction. Excessively large inrush current can cause system failures or malfunctions. ![]() The peak of the inrush current is largely determined by the input voltage Vi, Rds(on) of the Q1 MOSFET, and the ESR of the load capacitance CL on the load side, and increases along with the input voltage Vi. This excessive current is often referred to as inrush current. If the charge on the capacitor is close to zero then a large inrush current occurs, voltage is supplied to the output Vo, resulting in an instantaneous and large charge in current flow. When the load switch (Q1 in the diagram below) is turned ON, a large current much greater than the steady-state current will temporarily flow. Inrush Current When the Load Switch is ON
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