LED drivers and driver controllers

Details LED drivers and driver controllers LED drivers and driver controllers

2008-05-29

2011-11-15

Choi, Jacob Y (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S294000, C315S307000, C315S308000

Reexamination Certificate

active

08058815

ABSTRACT:
LED drivers and LED driver controllers are disclosed for controlling one or more high-intensity LEDs. The LED driver controllers may control one or more LED drivers in multiple different ways, including controlling on times, off times, delays, current levels, and other parameters. The LED drivers may have fast response times in which the LEDs are illuminated within microseconds after receiving a control signal. The LED drivers may also include other features, including a current boost for temporarily illuminating the LEDs at levels exceeding their maximum continuous current rating, as well as brightness controls for the LEDs, and other features. The LED drivers and/or LED driver controllers may be especially suitable for LEDs used to provide lighting for high-speed visions systems.

REFERENCES:
patent: 7307385 (2007-12-01), Yamamoto et al.
patent: 7492108 (2009-02-01), Garcia et al.
patent: 2006/0273742 (2006-12-01), Kim et al.
LM3402/LM3402HV 0.5A Constant Current Buck Regulator for Driving High Power LEDs Datasheet, Oct. 2006.
LM3404/04HV 1.0A Constant Current Buck Regulator for Driving High Power LEDs Datasheet, Feb. 2007.
LM5642/LM5642X High Voltage, Dual Synchronous Buck Converter with Oscillator Synchronization Datasheet, Dec. 2006.
A LED driver electrical schematic dated Sep. 21, 2002 corresponding to a publicly available LED driver.
A LED driver electrical schematic dated Nov. 25, 2002 corresponding to a publicly available LED driver.
A LED driver electrical schematic dated Jul. 27, 2004 corresponding to a publicly available LED driver.
A LED driver electrical schematic dated Dec. 21, 2004 corresponding to a publicly available LED driver.
A LED driver electrical schematic dated Mar. 21, 2005 corresponding to a publicly available LED driver.
A LED driver electrical schematic dated Feb. 21, 2006 corresponding to a publicly available LED driver.
A LED driver electrical schematic dated Mar. 21, 2006 corresponding to a publicly available LED driver.
LM3402 and LM3404 High Power PSOP-8 Evaluation Board Datasheet, Oct. 2007.
8-Channel Source Drivers 2981 and 2982 Data Sheet, Allegro Microsystems, Inc., copyright 1977-2008.
High Brightness LED Current Regulator, A6260 Data Sheet, Allegro Microsystems, Inc., copyright 2007-2008.
DABiC-5 8-Bit Serial Input Latched Sink Drivers, A6821 Data Sheet, Allegro Microsystems, Inc., copyright 2004-2005.
500mA Dual Channel Movie/Flash LED Driver, CA4134 Data Sheet, Catalyst Semiconductor, Inc., May 13, 2008.
350mA High Efficiency Step Down LED Driver, CAT4201 Data Sheet, Catalyst Semiconductor, Inc., Feb. 21, 2008.
6 Watt Boost LED Driver, CAT4240 Data Sheet, Catalyst Semiconductor, Inc., Nov. 6, 2007.
120mA High Efficiency White LED Driver, AP3152 Data Sheet, Diodes Incorporated, Nov. 2007.
Fan 2103-TinyBuck, 3A, 24V Input, Integrated Synchronous Buck Regulator Data Sheet, Fairchild Semiconductor, May 2008.
Fan 2106-TinyBuck, 6A, 24A Input, Integrated Synchronous Buck Regulator Data Sheet, Fairchild Semiconductor, May 2008.
LED controller IC BCR450, Small Signal Discretes Data Sheet, Infineon, Sep. 2007.
LED Buck Regulator Control IC, IRS254(0,1)(S)PbF Data Sheet No. PD60293, International Rectifier, Feb. 2, 2007.
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Dual 1.3A White LED Step-Up Converters with Wide Dimming LT3486 Data Sheet, Linear Technology, 2008.
PWM LED Driver and Boost, Flyback and SEPIC Controller LTC3783 Data Sheet, Linear Technology, 2008.

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