Adjustable lighting driver

• US 9,451,666 B1
• Filed: 07/08/2015
• Issued: 09/20/2016
• Est. Priority Date: 07/08/2015
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Inventors: Cho, Nam Chin, Mikani, Vaske
• Primary Examiner(s): Chang, Daniel D
• Application Number:
  US14/794,579
• Time in Patent Office: 440 Days
• Field of Search: 315/291, 315/307, 315/224
• US Class Current: 1/1
• CPC Class Codes: H05B 45/10 Controlling the intensity of the light

Abstract

A method of adjusting output power of a lighting driver includes setting output power of the driver to a maximum output power of the driver, the maximum output power of the driver corresponding to a brightest setting of a dimmer. The output power of the driver is adjustable by adjusting a dim level setting of the dimmer. The method further includes adjusting the dim level setting of the dimmer to a new setting that is different from the brightest setting of the dimmer. The new setting of the dimmer corresponds to an amount of the output power of the driver that is less than the maximum output power of the driver. The method also includes associating, by the driver, the brightest setting of the dimmer with the amount of the output power of the driver that is less than the maximum output power of the driver.

Claims

1. A method of adjusting output power of a lighting driver that corresponds to a brightest setting of a dimmer, the method comprising:

setting output power of a driver to a maximum output power of the driver, the maximum output power of the driver corresponding to a brightest setting of a dimmer, wherein the output power of the driver is adjustable by adjusting a dim level setting of the dimmer;

adjusting the dim level setting of the dimmer from the brightest setting of a dimmer to a new setting of the dimmer during a programming mode of the dimmer, wherein the brightest setting of the dimmer results in a maximum brightness level of a light emitted by a light source powered by the driver, wherein the new setting of the dimmer is selected to produce a new brightness level of the light that is dimmer than the maximum brightness level of the light, and wherein the new setting of the dimmer results in an amount of the output power of the driver that is less than the maximum output power of the driver; and

associating, by the driver, the brightest setting of the dimmer with the amount of the output power of the driver that is less than the maximum output power of the driver such that subsequent adjustment of the dim level setting of the dimmer to the brightest setting of the dimmer results in the new brightness level of the light instead of the maximum brightness level of the light.

2. The method of claim 1, further comprising entering a programming mode of the driver, wherein the steps of setting the output power of the driver and associating the brightest setting of the dimmer with the amount of the output power of the driver are performed in the programming mode of the driver.

3. The method of claim 1, wherein the dimmer is a phase-cut dimmer and wherein the brightest setting of the dimmer corresponds to a maximum conduction duration of an electrical signal generated by the dimmer before and after the brightest setting of the dimmer is associated by the driver with the amount of the output power of the driver that is less than the maximum output power of the driver.

4. The method of claim 1, wherein associating the brightest setting of the dimmer with the amount of the output power of the driver that is less than the maximum output power of the driver comprises storing a value corresponding to the amount of the output power of the driver in association with a value corresponding to the brightest setting of the dimmer.

5. The method of claim 4, further comprising generating and storing values corresponding to different amounts of the output power of the driver that are less than the amount of the output power of the driver that is less than the maximum output power of the driver, wherein the values are stored in association with values corresponding to different settings of the dim level setting of the dimmer.

6. The method of claim 5, wherein the values corresponding to different amounts of the output power of the driver are generated based on the value corresponding to the amount of the output power of the driver that is less than the maximum output power of the driver and a desired dimming curve.

7. The method of claim 6, wherein the desired dimming curve is a linear curve, an S curve or a square law curve.

8. The method of claim 1, wherein the dimmer is a 0-10 volt dimmer.

9. The method of claim 1, wherein the step of adjusting the dim level setting of the dimmer from the brightest setting of a dimmer to the new setting of the dimmer during the programming mode of the dimmer is performed by adjusting the dim level setting of the dimmer while visually checking the light emitted by the light source until the new brightness level of the light emitted by the light source has the new brightness level.

10. A lighting system, comprising:

a dimmer;

a light source; and

an adjustable lighting driver coupled to the dimmer and to the light source, the adjustable lighting driver comprising;

a memory device to store power level values corresponding to different amounts of output power of the driver, wherein the power level values are stored in the memory device in association with dim values corresponding to different dim level settings of the dimmer, and wherein the adjustable lighting driver provides the output power to the light source based on the power level values and the different dim level settings;

a logic module to generate a first power level value that corresponds to a new dim level setting of the dimmer based on an adjustment of the dimmer from a brightest setting of the dimmer to the new dim level setting of the dimmer during a programming mode of the dimmer, wherein the first power level value is stored in the memory device in association with the brightest setting of the dimmer, and wherein the new dim level setting of the dimmer corresponds to an amount of the output power of the driver that is less than a maximum output power of the driver associated with the brightest setting of the dimmer prior to the first power level value being stored; and

a power processor to provide the output power to the light source based on the power level values stored in the memory device, wherein the power processor provides to the light source the amount of the output power of the driver that is less than the maximum output power of the driver based on the first power level value when the dimmer is set to the brightest setting of the dimmer.

11. The system of claim 10, wherein the dimmer is a phase-cut dimmer and wherein the brightest setting of the dimmer corresponds to a maximum conduction duration of an electrical signal generated by the dimmer.

12. The system of claim 11, wherein the dim values corresponding to different dim level settings of the dimmer are conduction duration values of the electrical signal.

13. The system of claim 10, wherein the dimmer is a 0-10 volt dimmer.

14. The system of claim 10, wherein the driver provides the output power to the light source by providing an electrical signal to the light source and wherein a pulse width of the electrical signal corresponds to a power level value of the values stored in the memory device corresponding to a particular dim level setting of the dimmer.

15. The system of claim 10, wherein the power level values corresponding to the different amounts of the output power of the driver are generated based on the first power level value of the power level values stored in the memory device and a desired dimming curve.

16. The system of claim 10, wherein the logic module generates the values that are stored in the memory device during the programming mode of the adjustable lighting driver.

17. A lighting fixture, comprising:

a light emitting diode (LED) light source comprising one or more LEDs; and

an adjustable lighting driver coupled to the light source, the adjustable lighting driver comprising;

a memory device to store power level values corresponding to different amounts of output power of the driver, wherein the power level values are stored in the memory device in association with dim values corresponding to different dim level settings of the dimmer, and wherein the adjustable lighting driver provides the output power to the light source based on the power level values and the different dim level settings;

a logic module to generate a first power level value that corresponds to a new dim level setting of the dimmer based on an adjustment of the dimmer from a brightest setting of the dimmer to the new dim level setting of the dimmer during a programming mode of the dimmer, wherein the first power level value is stored in the memory device in association with the brightest setting of the dimmer, and wherein the new dim level setting of the dimmer corresponds to an amount of the output power of the driver that is less than a maximum output power of the driver associated with the brightest setting of the dimmer prior to the first power level value being stored; and

a power processor to provide the output power to the light source based on the power level values stored in the memory device, wherein the power processor provides to the light source the amount of the output power of the driver that is less than the maximum output power of the driver based on the first power level value when the dimmer is set to the brightest setting of the dimmer.

18. The lighting fixture of claim 17, wherein the adjustable lighting driver provides the output power to the LED light source by providing an electrical signal to the LED light source and wherein a pulse width of the electrical signal corresponds to a power level value of the power level values stored in the memory device.

19. The lighting fixture of claim 17, wherein the power level values corresponding to the different amounts of the output power of the driver are generated based on the first power level value of the power level values stored in the memory device and a desired dimming curve.

20. The lighting fixture of claim 17, wherein the values corresponding to the different dim level settings of the dimmer are conduction duration values of the electrical signal generated by a phase-cut dimmer.