Drive circuit and switching regulator comprising the same

A switching regulator comprising:

• a drive circuit;
• a switch element driven by the drive circuit;
• an input direct-current power supply for applying a direct-current voltage to a first terminal of the switch element;
• and
• an inductor connected to a second terminal of the switch element, for repeatedly performing accumulation and discharge of energy by an ON/OFF operation of the switch element,
• wherein the drive circuit drives the switch element having the first terminal, the second terminal, and a control terminal, wherein a direct-current voltage is applied to the first terminal,
• the drive circuit has a capacitor which is charged when the switch element is in the OFF state, and applies a charged voltage between the control terminal and the first terminal of the switch element or between the control terminal and the second terminal of the switch element when the switch element is in the ON state, and
• the drive circuit rectifies and smoothes a voltage occurring in the inductor to generate a direct-current output voltage.