Preliminary charge of a circuit with a switched capacitor, the driver cascodes, for example has

摘要

An apparatus for converting voltage comprises a circuit with a switched capacitor, a precharging circuit, a voltage divider stage and a driver stage. The circuit with a switched capacitor has pumps capacitors, in order to transport energy, and a duration of operation mode and a preloading mode. The precharging circuit charges, initially, the pumps capacitors, if the circuit with a switched capacitor in the preloading mode runs. It comprises a voltage divider stage with one or more nodes, each of which voltage with one or more corresponding voltage levels, and a driver stage with one or more cascodes, for example driver bern, each of which has a first terminal for receiving a trigger signal from at least one part of a voltage level at a corresponding one of the nodes depends, and a second connection for coupling with a pumping capacitor and another one of the driver comprise.