Drivers with simplified connectivity for controls

Patent metadata

Field	Value
Publication number	US-11265984-B2
Application number	US-202117228013-A
Country	US
Kind code	B2
Filing date	Apr 12, 2021
Priority date	Mar 5, 2019
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A lighting module may receive control signal having a first control scheme, the lighting module including a driver including at least one channel; and a control module; where the control module translates the received first control scheme into a predetermined second control scheme, when the first control scheme is different from the predetermined second control scheme; wherein the control module generates an identity voltage correlated with the received first control scheme; wherein the control module outputs to the driver a driver control signal including the predetermined second control scheme, and the identity voltage; and wherein the driver generates a driver output based on the identity voltage and the driver control signal.

First claim

What is claimed is:

1. A lighting module that receives a control signal having a first control scheme, comprising:
a driver comprising at least one channel; and
a control module;
wherein said control module translates the received first control scheme into a predetermined second control scheme, when the first control scheme is different from said predetermined second control scheme;
wherein the control module generates an identity voltage correlated with the received first control scheme;
wherein said control module outputs to said driver
a driver control signal comprising said predetermined second control scheme, and
said identity voltage; and

wherein said driver generates a driver output based on said identity voltage and said driver control signal.

2. The lighting module of claim 1 , wherein said driver comprises a micro control unit and firmware connected to said micro control unit.

3. The lighting module of claim 2 , wherein said firmware comprises a lookup table.

4. The lighting module of claim 3 , wherein said micro control unit applies logical processing to said identity voltage based on said lookup table to generate said driver output.

5. The lighting module of claim 1 , wherein said driver further comprises at least one MOSFET, and wherein said driver output controls said at least one MOSFET.

6. The lighting module of claim 5 , wherein said driver control signal comprises a pulse width modulated signal having a duty cycle.

7. The lighting module of claim 6 , wherein said driver output has a maximum value, and wherein the on percentage of said duty cycle is directly proportional to the percentage of said maximum value of said driver output.

8. The lighting module of claim 1 , wherein said driver comprises a plurality of channels.

9. The lighting module of claim 8 , wherein said driver controls a plurality of first LEDs via a first channel and a plurality of second LEDs via a second channel.

10. The lighting module of claim 8 , wherein said first LEDs emit white light having a CCT of between substantially 4500-6000K, and wherein said second LEDs emit white light having a CCT of between substantially 2700-4000K.

11. The lighting module of claim 8 , wherein the overall CCT is controlled by differentially controlling said first LEDs and said second LEDs.

12. The lighting module of claim 11 , wherein the number of PWM signals is from one to five.

13. The lighting module of claim 8 , wherein at least one said channel is associated with one of the applications selected from the group consisting of: simple dimming, two-channel white point tuning, and Red, Green, Blue, Warm White and Cool White full color tuning.

14. A method of controlling an LED system that receives a control signal having a first control scheme, the method comprising the steps of:
providing a control module and an LED driver comprising at least one channel;
translating, with said control module, the control signal having a first control scheme into a predetermined second control scheme, when the first control scheme is different from said predetermined second control scheme, and wherein the translating is performed by the control module;
generating, with said control module, an identity voltage associated with the first control scheme;
transmitting to said LED driver said identity voltage and a driver control signal comprising said predetermined second control scheme; and
generating an LED driver output based on said identity voltage and said driver control signal.

15. The method of claim 14 , wherein said driver comprises a micro control unit and firmware connected to said micro control unit, wherein said firmware comprises a lookup table; and
wherein said generating an LED driver output comprises applying, using said micro control unit, logical processing to said identity voltage based on said lookup table to generate said driver output.

16. The method of claim 14 , wherein said driver output is pulse width modulated, and wherein said generating an LED driver output comprises controlling the duty cycle of said driver output based on an identity of the first control scheme.

17. The method of claim 14 , further comprising, for each channel, performing said
generating, with said control module, an identity voltage associated with the first control scheme;
transmitting to said LED driver said identity voltage and a driver control signal comprising said predetermined second control scheme; and
generating an LED driver output based on said identity voltage and said driver control signal.

18. The method of claim 17 , further comprising dimming the lighting module in response to said generating an LED driver output.

Assignees

• Bridgelux Inc

Inventors

• Cumpston Brian
• Rai Shiva
• Willis-Kilgroe Linden
• Dodda Sudeep Reddy

Classifications

• H05B47/18 Primary

  via data-bus transmission · CPC title

• H05B47/19

  via wireless transmission · CPC title

• H05B45/46

  having LEDs disposed in parallel lines · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21V23/001

  the elements being electrical wires or cables · CPC title