Electrical power supply for a lighting device of an automobile vehicle comprising a plurality of outputs
AssigneeValeo Vision
InventorsDavid Boudikian, Sylvain Yvon, Jean-Philippe Alves, Irantzu Jauregi, Souheil Mazzour
Life of this patent
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Abstract
A device that provides a circuit for controlling the power supply of a plurality of groups of light sources, preferably of the light-emitting diodes type, which perform a plurality of lighting functions for an automobile vehicle. The device is noteworthy in that it enables a primary output voltage and several high-voltage secondary outputs to be produced, corresponding to the power supply requirements of the various groups of light sources, with the use of a single switch-mode converter circuit.
Claims12
A device for controlling an electrical power supply of at least two groups of light sources for an automobile vehicle, the device comprising:
- a switch-mode voltage converter circuit designed to
- generate a switched voltage signal starting from an input DC voltage,
- convert said switched voltage signal into an output DC voltage having a first voltage level, and
- power a first group of light sources that perform a low-beam headlamp function or a high-beam headlamp function of the automobile vehicle;
- and
- an output device that is connected to the switch-mode voltage converter circuit and comprises an electronic circuit including capacitors and diodes, without including a switch, the output device designed to
- convert said switched voltage signal generated at the switch-mode voltage converter circuit into at least a second output DC voltage having a second voltage level, and
- power a second group of light sources that perform a position light function of the automobile vehicle, without performing the low-beam headlamp function or the high- beam headlamp function.
A lighting device for an automobile vehicle, the lighting device comprising:
- at least two groups of light sources producing at least two different light beams;
- and
- a device for controlling an electrical power supply of the at least two groups of light sources, the device including
- a switch-mode voltage converter circuit designed to
- generate a switched voltage signal starting from an input DC voltage,
- convert said switched voltage signal into an output DC voltage having a first voltage level, and
- power a first group of light sources that perform a low-beam headlamp function or a high-beam headlamp function of the automobile vehicle, and
- an output device that is connected to the switch-mode voltage converter circuit and comprises an electronic circuit including capacitors and diodes, without including a switch, the output device designed to
- convert said switched voltage signal generated at the switch-mode voltage converter circuit into at least a second output DC voltage having a second voltage level, and
- power a second group of light sources that perform a position light function of the automobile vehicle, without performing the low-beam headlamp function or the high-beam headlamp function.
Dependencies are inferred from the claim text.