| 摘要 |
The invention relates to an arrangement comprising a voltage converter (1) for supplying voltage to an electrical load (2) by means of a current sink (3), first (4) and second (5) comparators and a selection logic (6). A voltage at the voltage converter (1) output depends on a multiplication factor. The selection logic (6) determines a new multiplication factor from the results of comparison of a current sink voltage with lower and top thresholds. A power use high efficiency is attainable, when the multiplication factor is adjusted in such a way that the current sink voltage is greater than the lower threshold and less than the top threshold, thereby the multiplication factor is increasable as much as necessary, but not further. |
