DC-DC converter and a method of controlling thereof

A method of controlling a DC-DC converter for smoothing an input from a direct current (DC) power source and for supplying output a preset output voltage to an integrated circuit, wherein the DC-DC converter comprises:

• a first reactor provided between an input of said direct current (DC) power source and said integrated circuit;
• and
• a first charge storage means connected in parallel between said first reactor and said integrated circuit;
• the method of controlling the DC-DC converter comprising the acts of:
• in a steady state where a preset output voltage is supplied to said integrated circuit, flowing a forward direction current from a side of said direct current (DC) power source of said first reactor to a side of said integrated circuit of said first reactor;
• in a transitional time period during said output voltage is increased to another voltage, flowing a forward direction current from said side of said direct current (DC) power source of said first reactor to said side of said integrated circuit of said first reactor to charge said first charge storage means and to increase said output voltage;
• and
• in a transitional time period during the output voltage is further decreased to another preset value, flowing a backward direction current from said side of said integrated circuit of said first reactor to said side of said direct current (DC) power source of said first reactor to discharge the storage charge on said first charge storage means and to decrease said output voltage.