Load driving apparatus and driving method of load circuit

A method of driving a load circuit in a load driving apparatus comprising:

• a power source applying a power supply voltage;
• a load circuit to which the power supply voltage is supplied from the power source, and driving;
• a relay circuit electrically connecting the power source to the load circuit on the basis of a switching operation;
• a first switching device driving the relay circuit so as to execute the switching operation;
• and
• a second switching device having one end connected to the power source and another end connected to the load circuit, and supplying the power supply voltage to the load circuit, comprising the steps of:
• outputting a control signal to the second switching device so as to supply the power supply voltage to the load circuit;
• outputting a control signal to the first switching device so as to electrically connect the relay circuit to the power source;
• and
• starting driving the load circuit on the basis of the two steps.