Title:
ARRANGEMENT PROVIDED WITH A VOLTAGE CONVERTER FOR SUPPLYING VOLTAGE TO AN ELECTRICAL LOAD AND ASSOCIATED METHOD
Document Type and Number:
WIPO Patent Application WO2006097328
Kind Code:
A3
Abstract:
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.
Inventors:
TRATTLER PETER (AT)
Application Number:
PCT/EP2006/002492
Publication Date:
November 30, 2006
Filing Date:
March 17, 2006
Export Citation:
Assignee:
AUSTRIAMICROSYSTEMS AG (AT)
TRATTLER PETER (AT)
TRATTLER PETER (AT)
International Classes:
H02M3/07; H05B44/00
Foreign References:
| US20040041620A1 | 2004-03-04 |
Other References:
"480mA White LED 1x/1.5x/2x Charge Pump for Backlighting and Camera Flash", 2004, pages 1 - 14, XP002390437, Retrieved from the Internet [retrieved on 20060714]
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