Overview: This seminar will introduce the fundamental technologies and architectures used to drive high brightness LEDs. Examples of different buck, boost, buck-boost and current regulation techniques will be evaluated, and performance metrics such as power efficiency, PWM dimming and contrast ratios will be compared. National's key LED-driver products and tools will also be presented and highlighted.
Length: 50 minutes
Published Date: November 2007
Topics covered in this online seminar include:
- Introduction to LEDs (Structure and Characteristics of HB LEDs, Temperature Effects on LED Parameters, LED Binning, LED Applications)
- LED Driving Techniques (Bucking, Boosting and Bucking and Boosting)
- LED Dimming and Contrast Ratios
- New Tools for designing with LED Drivers
 Presenter: Chris Richardson is an Applications Engineer in the Power Management Products group, Medium and High Voltage Division. His responsibilities are divided between lab work, bench evaluation of new ICs, written work such as datasheets and applications notes, and training for field engineers and seminars. Since joining National Semiconductor in 2001, Chris has worked mainly on synchronous buck controllers and regulators. In the last three years he has focused on products for the emerging high brightness LED market in the automotive and industrial areas. Chris holds a BSEE from the Virginia Polytechnic Institute and State University. |
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Presentation (pdf 2.4KB)
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