Capacitive voltage conversion

Classical power conversion makes use of inductors and transformers to deliver power at different voltage levels. However, these components typically transform these power converters into bulky and heavy components. However, there are several applications where we only need a voltage and a rather limited current sourced. Moreover, for power converters on silicon chips, efficient inductors are not possible and capacitive power converters are needed. In this chapter we discuss those power converters.

Fig. 12 Voltage doubler schematic with large C2 without resistive load

Fig. 13 Voltage doubler with large C2 node voltages without resistive load

Fig. 14 Voltage doubler with large C2 node voltages with resistive load

Fig. 15 Voltage doubler with large C2 in the presence of resistive load

Fig. 16 Voltage doubler with equal capacitances

Fig. 17 Voltage doubler with equal capacitances node voltages and a resistive load

Fig. 18 Capacitive Voltage upconvertor schematic comprising 7 stages

Fig. 19 Node voltages of a capacitive Voltage upconvertor comprising 7 stages