Patent ID: 8773087

Claim:
A power supply circuit comprising: a main power supply unit comprising a voltage input, at least one main switching element, and at least one reactive element, wherein said switching element is controllable to deliver at least one of an output voltage and an output current; and an output unit connected to said main power supply unit, the output unit comprising: a load output, a load switching element connected in series to said load output and configured to operatively connect said load output to said main power supply unit, a first switched capacitor unit connectable to said load output and comprising a first capacitor and a first capacitor switching element configured to selectively connect the first capacitor in parallel with said load output and said load switching element, and a second switched capacitor unit connectable to said load output and comprising a second capacitor and a second capacitor switching element configured to selectively connect the second capacitor in parallel with said load output and said load switching element; and a control unit configured to select one of the first and second switched capacitor units, and to control the load switching element synchronously with one of the first capacitor switching element and the second capacitor switching element of the selected one of the first and second switched capacitor units to connect the corresponding one of the first capacitor and the second capacitor in parallel with said load output and said load switching element.