DC-DC VOLTAGE CONVERTER AND CONVERSION METHOD

摘要

A DC-DC converter comprises a capacitor arrangement and a switching arrangement for controlling coupling of the capacitor arrangement to a converter input during a loading phase and to a converter output during a storing phase. The converter cycles between charge pumping stages and charge holding phases, giving rise to a converter switching frequency. A variable output load is controlled thereby to maintain a constant converter switching frequency.

主权项

1. A DC-DC converter, comprising:
a capacitor arrangement; a switching arrangement for controlling coupling of the capacitor arrangement to a converter input during a loading phase and to a converter output during a storing phase; a circuit for controlling the switching arrangement to alternate the loading and storing phases during an output charge stage and to cease alternation between the loading and storing phases during an output hold stage, the cycling between stages giving rise to a converter switching frequency; a variable output load; and a feedback circuit for controlling the variable output load thereby to maintain a constant converter switching frequency.