IP Library Granted Patent US 11,265,984
Granted Patent B2
US 11,265,984 · App. 17/228,013 · Granted Mar 1, 2022

Drivers with simplified connectivity for controls

Inventors: Brian Cumpston (Pleasanton, CA); Shiva Rai (Fremont, CA); Linden Willis-Kilgroe (San Jose, CA); Sudeep Reddy Dodda (San Jose, CA)
Assignee: Bridgelux, Inc.
H05B45/20F21V23/001F21V23/004F21V23/06H05B47/19F21Y2115/10
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Quick Facts
Patent No.
US 11,265,984
App. No.
17/228,013
Granted
Mar 1, 2022
Kind
B2
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.

Claims (35)

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.

Continuity (2)
Continuation 16292607 · Mar 5, 2019
Related Publication 20210251059A1 · Aug 12, 2021