Pilot signal generating and isolation circuit and electric vehicle supply equipment including the same

Electric vehicle supply equipment comprising:

• power lines structured to carry power to charge an electric vehicle;
• a power supply unit structured to generate DC power and a first ground from power received from the power lines;
• and
• a pilot signal generating circuit structured to generate a pilot signal and including:
• a pilot control signal unit structured to generate a pilot control signal having a state including one of a high state and a low state;
• an isolation unit electrically connected to the pilot control signal unit and the first ground and being structured to isolate the pilot control signal to generate an isolated pilot control signal;
• and
• an amplification unit electrically connected to the isolation unit, having a second ground, and being structured to amplify the isolated pilot control signal to generate the pilot signal,
• wherein the isolation unit is structured to isolate the second ground of the amplification unit from the first ground.