Switching regulator including charge pump

A switching regulator for converting an input voltage to an output voltage, comprising:

• a power stage circuit, for switching at least one power switch thereof according to a driving signal to convert the input voltage to the output voltage, the power stage circuit including:
• an active circuit, which includes the power switch, an inductor, and a first diode, the active circuit being controlled by the driving signal to convert the input voltage to a middle voltage, wherein the power switch, the inductor, and the first diode are coupled to a common node;
• and
• a passive circuit, which is coupled to the active circuit, and includes a charge pump for converting the middle voltage to the output voltage, wherein the charge pump and the active circuit share the first diode;
• and
• a control circuit, which is coupled to the power stage circuit, for generating the driving signal according to a feedback signal.