Charge pump
（重定向自Flying capacitor）
![Two-stage charge pump with DC voltage supply and a pump control signal S0](/Images/godic/202501/13/Charge_pump,_2_stage.svg5445.png")
A charge pump is a kind of DC to DC converter that uses capacitors as energy-storage elements to create either a higher- or lower-voltage power source. Charge-pump circuits are capable of high efficiencies, sometimes as high as 90–95%, while being electrically simple circuits.