Switching device and driving method thereof

A switching device and a driving method thereof are provided. It said switching device is a switch that controls the current through the inductive element (inductive element); Monitoring node connected to the switch (monitoring node); And is connected to the monitoring node and a reference voltage, comprising: a signal control circuit which turns on / off the switch, the signal control circuitry of the first voltage generated based on the monitored voltage, the sampling voltage and the reference voltage but turns off the switch when the second voltage generated on the basis of at least one is equal to each other, the monitoring voltage is the voltage of the monitor node.