US 2019/0191536 A1 · SELECTIVE POWER SUPPLY DEVICE FOR INCANDESCENT LAMP OR LIGHT-EMITTING DIODE

Abstract

The power supply device comprises a supply transistor commanded by a command signal and providing electric power to a lighting module, and a driving means configured to selectively generate, depending on an instruction signal representative of the structure of said at least one lighting module, a first command signal able to command the supply transistor into an ohmic regime, a second command signal able to command the supply transistor into a pulse width modulation regime involving an alternation of ohmic regimes and blocked regimes, and a third command signal able to command the supply transistor into a saturated regime.

Claims18

Dependent claims

A power supply device, comprising:

a supply transistor coupled to drive a load circuit;
and
a driving circuit configured to drive a control terminal of the supply transistor in a plurality of operating modes depending on a structure of the load circuit, said operating modes including:
a first operating mode where a control signal applied to the control terminal is generated so that the supply transistor operates in an ohmic regime when driving the load circuit and a second operating mode where the control signal applied to the control terminal is generated so that the supply transistor operates in a saturated regime when driving the load circuit.

1 more element

A method for providing electric power to at least one lighting module having a structure corresponding to one of an incandescent lamp structure or a light-emitting diode structure, comprising:

receiving an instruction signal which indicates the structure of said at least one lighting module;
and
if the instruction signal which indicates the structure is the incandescent lamp structure, then controlling an operational mode of a supply transistor configured to deliver the electric power to the at least one lighting module so that the supply transistor operates in an ohmic regime;
and
if the instruction signal which indicates the structure is the light-emitting diode structure, then controlling the operational mode of the supply transistor configured to deliver the electric power to the at least one lighting module so that the supply transistor operates in a saturation regime.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/285,615Filed 26 Feb 2019

Priority

FR 175352924 Apr 2017

Published

20 Jun 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

H05B 39/047
Continuously: with pulse width modulation from a DC power source
B60Q 1/00
Arrangement of optical signalling or lighting devices, the mounting or supporting thereof
B60Q 3/80
Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors: circuits; Control arrangements
H05B 39/02
Circuit arrangements or apparatus for operating incandescent light sources: switching on, e.g. with predetermined rate of increase of lighting current

Selective power supply device for incandescent lamp or light-emitting diode

Life of this patent

Selective power supply device for incandescent lamp or light-emitting diode

Life of this patent

Abstract

Claims18