DC-DC voltage converter and conversion method

摘要

A DC-DC converter uses a switched capacitor arrangement. A filter capacitor is connected between one terminal of the capacitor arrangement and a fixed voltage line and a calibration arrangement is used for setting or enabling selection of the capacitance of the filter capacitor.;In this way, a capacitance is added to a terminal of the switched capacitor arrangement. The capacitance value can be chosen or adjusted to keep the DC-DC converter current capability within specification limits.

主权项

1. A DC-DC converter, comprising:
a switched capacitor arrangement that includes a switching capacitor connected between a plurality of switches, the switched capacitor arrangement configured and arranged to operate in a first phase during which the switching capacitor is charged by an input to the DC-DC converter and a second phase during which the switching capacitor is discharged to an output of the DC-DC converter; a filter capacitor connected between one terminal of the switching capacitor arrangement and a fixed voltage line; and a calibration arrangement configured to determine and adjust a capacitance of the filter capacitor.