Adaptive universal LED bypass

1 . An electronic circuit configured for being connected to at least one light emitting diode (LED) and at least one driver circuit configured for providing a regulated driver current, wherein the driver circuit comprises at least one of a constant current sink and a constant current source, the electronic circuit comprising:

a bypass circuit configured for bypassing at least a portion of the regulated driver current around the LED; and

a detection circuit defining a threshold voltage, wherein the detection circuit is configured for activating the bypass circuit in response to an output voltage of the driver circuit dropping below the threshold voltage, wherein the threshold voltage matches a minimum output voltage of the driver circuit.

2 . The electronic circuit according to claim 1 , wherein the detection circuit is configured for controlling the bypass circuit by using a negative loop feedback.

3 . The electronic circuit according to claim 1 , wherein the electronic circuit is configured for continuously regulating the output voltage by progressively bypassing the LED.

4 . The electronic circuit according to claim 1 , wherein the electronic circuit is configured for continuously increasing the portion of the driver current bypassed around the LED with the output voltage decreasing in response to the output voltage dropping below the threshold voltage.

5 . The electronic circuit according to claim 1 , wherein, at least within a predetermined voltage range, the electronic circuit is configured for keeping the output voltage constant.

6 . The electronic circuit according to claim 1 , wherein at least one of the bypass circuit and the detection circuit comprises an analog circuit.

7 . The electronic circuit according to claim 1 , further comprising at least one capacitor configured for stabilizing the electronic circuit wherein the capacitor defines a low pass filter in the electronic circuit.

8 . The electronic circuit according to claim 1 , wherein the detection circuit comprises at least one transistor, wherein the threshold voltage is the threshold voltage of the transistor.

9 . The electronic circuit according to claim 8 , wherein the transistor is a field effect transistor (FET) comprising a gate contact, a drain contact, and a source contact, wherein the transistor is arranged such that the output voltage is applied to the gate contact of the transistor.

10 . The electronic circuit according to claim 1 , wherein the threshold voltage exceeds the minimum output voltage by less than 0.5 V.

11 . A driver system comprising at least one electronic circuit and at least one driver circuit configured for providing a regulated driver current, wherein the at least one driver circuit comprises at least one of a constant current sink and a constant current source,

wherein the electronic circuit is configured for being connected to at least one light emitting diode (LED) and the driver circuit, the electronic circuit comprising:

a bypass circuit configured for bypassing at least a portion of the regulated driver current around the LED; and

a detection circuit defining a threshold voltage, wherein the detection circuit is configured for activating the bypass circuit in response to an output voltage of the driver circuit dropping below the threshold voltage, wherein the threshold voltage matches a minimum output voltage of the driver circuit.

12 . The driver system according to claim 11 , wherein the driver circuit comprises a first integrated circuit, and wherein the bypass circuit and the detection circuit together form a second integrated circuit that is separate from the first integrated circuit.

13 . A lighting system comprising at least one driver system and at least one LED,

wherein the driver system comprises at least one electronic circuit and at least one driver circuit configured for providing a regulated driver current, wherein the driver circuit comprises at least one of a constant current sink and a constant current source,

wherein the electronic circuit is configured for being connected to at least one light emitting diode (LED) and the driver circuit, the electronic circuit comprising:

a bypass circuit configured for bypassing at least a portion of the regulated driver current around the LED; and

a detection circuit defining a threshold voltage, wherein the detection circuit is configured for activating the bypass circuit in response to an output voltage of the driver circuit dropping below the threshold voltage, wherein the threshold voltage matches a minimum output voltage of the driver circuit.

14 . The lighting system according to claim 13 , further comprising a battery configured to provide a supply voltage to the at least one LED and the driver circuit.

15 . A method for bypassing at least one LED by using at least one electronic circuit,

wherein the electronic circuit is configured for being connected to at least one light emitting diode (LED) and a driver circuit configured for providing a regulated driver current, the driver circuit comprising at least one of a constant current sink and a constant current source, the electronic circuit comprising:

a bypass circuit configured for bypassing at least a portion of the regulated driver current around the LED; and

a detection circuit defining a threshold voltage, wherein the detection circuit is configured for activating the bypass circuit in response to an output voltage of the driver circuit dropping below the threshold voltage, wherein the threshold voltage matches a minimum output voltage of the driver circuit,

the method comprising at least the following steps:

activating the bypass circuit by using the detection circuit in response to an output voltage of the driver circuit dropping below the threshold voltage of the detection circuit; and

bypassing at least a portion of the regulated driver current around the LED by using the bypass circuit.