AC input/DC output power supply and control method thereof

An AC input/DC output power supply comprising:

• a frequency converter for converting an input AC voltage into an AC voltage of a higher frequency than the frequency of the input AC voltage,
• a voltage converter for taking the AC voltage from the frequency converter as input and generating a secondary voltage, splitting the secondary voltage into a first secondary AC voltage and a plurality of second secondary AC voltage, and outputting the first and second secondary AC voltages;
• a DC voltage generator for receiving the first secondary AC voltage and outputting a predetermined DC voltage to the outside of the AC input/DC output power supply;
• a plurality of waveform shaper each for receiving a corresponding one of the plurality of second secondary AC voltages and outputting a square wave voltage signal generated from the second secondary AC voltage;
• and
• a plurality of frequency adjuster each for adjusting a frequency of a corresponding one of the square wave voltage signals to be a predetermined frequency, and thereby outputting a clock signal to the outside of the AC input/DC output power supply.

A control method of AC input /DC output power supply, the control method comprising:

• converting an input AC voltage into an AC voltage of a higher frequency than the frequency of the input AC voltage;
• converting the AC voltage into a secondary voltage;
• splitting the secondary voltage into a first secondary AC voltage and a second secondary AC voltage, and outputting the first and second secondary AC voltages;
• receiving the first secondary AC voltage and outputting a DC voltage of a predetermined voltage value;
• shaping a waveform of the second secondary AC voltage and thereby outputting a square wave voltage signal ;
• and receiving the square wave voltage signal and adjusting a frequency of the square wave voltage signal to be a predetermined frequency, thereby outputting a clock signal to the outside of the AC input/DC output power supply.