LED driving circuit

Details LED driving circuit LED driving circuit

2011-07-12

2011-07-12

Philogene, Haissa (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S294000, C315S308000, C315S224000, C315S312000, C345S046000, C345S082000, C345S077000, C345S204000, C345S212000

Reexamination Certificate

active

07977891

ABSTRACT:
An LED driving circuit is provided for driving an LED module, comprising a transistor switch and a feedback controller. The transistor switch has a control terminal, a first terminal, and a second terminal. The first terminal is coupled to the LED module and the control terminal receives a control signal for controlling a current passing through the transistor switch. The feedback controller receives a reference voltage and a current detecting signal indicative of the magnitude of the current and generates the control signal accordingly. The feedback controller is connected to a driving power source with level higher than the level of the first terminal of the transistor switch. Hence, the maximum level of an adjustable range of the control signal is higher than the first terminal of the transistor switch.

REFERENCES:
patent: 7317403 (2008-01-01), Grootes et al.
patent: 7425943 (2008-09-01), Furukawa
patent: 7855520 (2010-12-01), Leng
patent: 7888888 (2011-02-01), Huang et al.
patent: 2006/0082538 (2006-04-01), Oyama
patent: 2006/0290625 (2006-12-01), Sugimoto
patent: 2009/0322235 (2009-12-01), Shiu et al.

Affiliated with

Also associated with

Rating

LED driving circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2737548