Dimming Techniques for Switched-Mode LED Drivers
The exponential growth of LED lighting has ushered in a vast selection of integrated circuit devices to provide controlled power to LEDs. No longer acceptable to an energy-conscious world, switched-mode LED drivers have long since replaced power-hungry linear current sources as the standard. Applications from flashlights to stadium scoreboards all require precise
control of regulated currents. In many instances, real-time changes in LED output intensity are required. This function is commonly referred to as dimming control. This paper describes some basic LED theory and several techniques used to provide dimming control to switched-mode LED drivers.
Please disable any pop-up blockers for proper viewing of this Whitepaper.