Electronic assembly for an automotive luminuos device and automotive luminous device

1 . An electronic assembly for an automotive luminous device, the electronic assembly comprising

a light source

a driver configured to control the operation of the light source, the driver including a driver power input and a driver control input, wherein the light source is electrically connected to the driver control input;

a power supply configured to provide electric supply to the light source and to the driver; and

an input protection circuit arranged between the power supply and the light source, the input protection circuit being intended to limit the transient voltage and/or current received by the light source and/or by the driver and includes a protection input and a protection output

wherein

the protection input and the protection output are connected by the interposition of a resistor group including a resistor and a diode connected in series, the diode having an anode terminal and a cathode terminal,

the diode's anode terminal is connected to the protection input directly or through the resistor,

a node between the protection input and the resistor group is connected to the ground through a first capacitor and

a node between the resistor group and the protection output is connected to the ground through a second capacitor.

2 . The electronic assembly according to claim 1 , wherein the input protection circuit is also located between the power supply and the driver power input.

3 . The electronic assembly according to claim 1 , wherein the first capacitor has a capacitor value higher than 47 nF.

4 . The electronic assembly according to claim 1 , wherein the second capacitor has a capacitor value equal or higher than 2.2 μF.

5 . The electronic assembly according to claim 1 , wherein the resistor has a resistor value comprised between 10 and 40Ω.

6 . The electronic assembly according to claim 1 , wherein the driver is a DC/DC driver.

7 . The electronic assembly according to claim 1 , wherein the driver is a linear driver.

8 . The electronic assembly according to claim 1 , wherein the light source is a solid-state light source.

9 . The electronic assembly according to claim 1 , wherein the light source includes at least one RGB LED.

10 . The electronic assembly according to claim 1 , wherein the resistor is located closer to the protection output than the diode.

11 . Automotive luminous device comprising

an electronic assembly including

a light source

a driver configured to control the operation of the light source, the driver including a driver power input and a driver control input, wherein the light source is electrically connected to the driver control input;

a power supply configured to provide electric supply to the light source and to the driver; and

an input protection circuit arranged between the power supply and the light source, the input protection circuit being intended to limit the transient voltage and/or current received by the light source and/or by the driver and includes a protection input and a protection output

wherein

the protection input and the protection output are connected by the interposition of a resistor group including a resistor and a diode connected in series, the diode having an anode terminal and a cathode terminal,

the diode's anode terminal is connected to the protection input directly or through the resistor,

a node between the protection input and the resistor group is connected to the ground through a first capacitor and

a node between the resistor group and the protection output is connected to the ground through a second capacitor; and

an optical element arranged to project the light emitted by the light source.