Switching LED driver with temperature compensation to...

Details Switching LED driver with temperature compensation to... Switching LED driver with temperature compensation to...

2007-07-17

2007-07-17

Philogene, Haissa (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S291000, C315S224000, C315S169100, C323S282000, C323S283000, C323S267000

Reexamination Certificate

active

11268536

ABSTRACT:
The present invention provides a LED driver for control the brightness of the LED. An energy-transferred element and a switch are connected in series with the LED for controlling the current of the LED. A diode is coupled to the energy-transferred element for freewheeling the energy of the energy-transferred element through the LED. A control circuit is developed to generate a control signal for switching the switch in response to the LED current. The LED current is further adjusted in response to a voltage signal of the LED. The value of the voltage signal is correlated to the LED temperature. Therefore the LED current can be programmed in accordance with the LED temperature.

REFERENCES:
patent: 5642130 (1997-06-01), Browne
patent: 6721192 (2004-04-01), Yang et al.
patent: 6798152 (2004-09-01), Rooke et al.
patent: 6801028 (2004-10-01), Kernahan et al.
patent: 6836415 (2004-12-01), Yang et al.
patent: 6888383 (2005-05-01), Fairbanks
patent: 7116294 (2006-10-01), Stopa
patent: 2005/0151708 (2005-07-01), Farmer et al.
patent: 2006/0214603 (2006-09-01), Oh et al.
U.S. Appl. No. 11/265,284, by Yang, filed Nov. 3, 2005.

Affiliated with

Also associated with

Rating

Switching LED driver with temperature compensation to... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switching LED driver with temperature compensation to..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching LED driver with temperature compensation to... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3726654