A driving device of a semiconductor switch, comprising: a semiconductor switch configured to perform a switching operation by a gate driving voltage, the semiconductor switch comprising a first switch terminal connectable to a positive terminal of a main power, and a second switch terminal connectable through a load to a negative terminal of the main power; a control signal generation circuit configured to detect a change in a voltage between a first control signal input terminal connected to a positive terminal of a control signal input power that is configured to generate a voltage for controlling a switching operation of the semiconductor switch and a second control signal input terminal connected to a negative terminal of the control signal input power and output a corresponding control signal, a control signal detection circuit configured to detect the control signal and output a corresponding driving control signal; a gate driving voltage generation circuit configured to be driven by the driving control signal and output the gate driving voltage; and an internal power generation circuit connected to the first switch terminal and to an internal ground terminal, the internal power generation circuit being configured to be supplied with the main power when the semiconductor switch is in a turned-off state, and generate a power supply voltage which is needed in the semiconductor switch, the control signal generation circuit, the control signal detection circuit and the gate driving voltage generation circuit, wherein the control signal generation circuit comprises: a bridge diode configured to rectify the voltage supplied between the first control signal input terminal and the second control signal input terminal and output an internal control signal through a positive signal line and a negative signal line; a control signal transfer circuit configured to transfer the internal control signal supplied through the bridge diode to the control signal detection circuit as the control signal; and a ground voltage circuit configured to maintain a lower voltage between a voltage of the second switch terminal connectable to the negative terminal of the main power through the load and a voltage of the negative signal line, as a voltage of the internal ground terminal, such that the control signal to be outputted from the control signal transfer circuit is outputted based on the voltage of the internal ground terminal. a semiconductor switch configured to perform a switching operation by a gate driving voltage, the semiconductor switch comprising a first switch terminal connectable to a positive terminal of a main power, and a second switch terminal connectable through a load to a negative terminal of the main power; a control signal generation circuit configured to detect a change in a voltage between a first control signal input terminal connected to a positive terminal of a control signal input power that is configured to generate a voltage for controlling a switching operation of the semiconductor switch and a second control signal input terminal connected to a negative terminal of the control signal input power and output a corresponding control signal, a control signal detection circuit configured to detect the control signal and output a corresponding driving control signal; a gate driving voltage generation circuit configured to be driven by the driving control signal and output the gate driving voltage; and an internal power generation circuit connected to the first switch terminal and to an internal ground terminal, the internal power generation circuit being configured to be supplied with the main power when the semiconductor switch is in a turned-off state, and generate a power supply voltage which is needed in the semiconductor switch, the control signal generation circuit, the control signal detection circuit and the gate driving voltage generation circuit, wherein the control signal generation circuit comprises: a bridge diode configured to rectify the voltage supplied between the first control signal input terminal and the second control signal input terminal and output an internal control signal through a positive signal line and a negative signal line; a control signal transfer circuit configured to transfer the internal control signal supplied through the bridge diode to the control signal detection circuit as the control signal; and a ground voltage circuit configured to maintain a lower voltage between a voltage of the second switch terminal connectable to the negative terminal of the main power through the load and a voltage of the negative signal line, as a voltage of the internal ground terminal, such that the control signal to be outputted from the control signal transfer circuit is outputted based on the voltage of the internal ground terminal. a bridge diode configured to rectify the voltage supplied between the first control signal input terminal and the second control signal input terminal and output an internal control signal through a positive signal line and a negative signal line; a control signal transfer circuit configured to transfer the internal control signal supplied through the bridge diode to the control signal detection circuit as the control signal; and a ground voltage circuit configured to maintain a lower voltage between a voltage of the second switch terminal connectable to the negative terminal of the main power through the load and a voltage of the negative signal line, as a voltage of the internal ground terminal, such that the control signal to be outputted from the control signal transfer circuit is outputted based on the voltage of the internal ground terminal.