EP 2547176 A1 20130116 - Resonant converter for a gas discharge lamp
Title (en)
Resonant converter for a gas discharge lamp
Title (de)
Resonanzwandler für eine Gasentladungslampe
Title (fr)
Convertisseur résonant pour une lampe à décharge
Publication
Application
Priority
EP 11250662 A 20110715
Abstract (en)
The invention relates to methods and apparatus for control of electrical lighting, in particular for powering a gas discharge lamp using a resonant power converter. Embodiments disclosed include a method of controlling a resonant power converter (400) to drive a gas discharge lamp (401), the resonant power converter comprising first and second series connected switches (402, 403) connected between first and second supply voltage lines (404, 405) and a resonance circuit comprising a capacitor (406) and an inductor (407), the resonance circuit connected between a node (408) connecting the first and second switches (402, 403) and the second supply voltage line (405), the method comprising, in an operational mode, the sequential steps of: closing the first switch (402) to start a first conduction interval; and opening the first switch (402) to end the first conduction interval when a voltage across the capacitor (406) crosses a predetermined first voltage level, wherein controlling the predetermined first voltage level determines a power level provided to the gas discharge lamp (401).
IPC 8 full level
H03K 17/00 (2006.01); H05B 41/282 (2006.01); H05B 41/285 (2006.01); H05B 41/392 (2006.01)
CPC (source: EP)
H05B 41/2828 (2013.01); H05B 41/2856 (2013.01); H05B 41/3927 (2013.01)
Citation (applicant)
- WO 2006103606 A1 20061005 - KONINKL PHILIPS ELECTRONICS NV [NL], et al
- WO 2009037613 A1 20090326 - NXP BV [NL], et al
- WO 2010073196 A1 20100701 - NXP BV [NL], et al
- WO 2006103609 A2 20061005 - KONINKL PHILIPS ELECTRONICS NV [NL], et al
Citation (search report)
- [XDI] US 2010033998 A1 20100211 - HALBERSTADT HANS [NL]
- [XI] US 5703439 A 19971230 - NERONE LOUIS R [US]
- [A] US 2001036090 A1 20011101 - HALBERSTADT JOHAN CHRISTIAAN [NL]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 11250662 A 20110715