Hua (Walker) Bai is an applications engineer at Linear Technology Corp., Milpitas, Calif. He holds a PhD in electrical engineering from the University of Missouri-Rolla. Email address: wbai@linear.com
2 results found for Hua (Walker) Bai, displaying items 1 - 2
October 2, 2008[Ideas For Design] Triple-Output LED Driver Works With Common-Anode LED Strings
SOME MULTI-STRING LED MODULES come with a common-anode configuration. The commonanode connection reduces the number of wires between the LED module and its driver from 2N to N+1, where N is the number of LED strings in the module. In this idea, we’ll drive a commonanode LED module while simultaneously limiting the LED string voltage when an LED string becomes open. Figure 1 shows the LT3496...
February 28, 2008[Ideas For Design] Use "Extra" LED Driver Channel To Provide Constant-Voltage Source
LED applications are booming: backlighting for LCD TVs, projectors, and computer displays, camera flashes, and vehicle brake lights and taillights are just a few. All require constant-current LED drivers that offer a high dimming ratio, high efficiency, precise adjustable current, and low cost. To save space, some LED drivers can handle multiple strings of LEDs. For instance, the LT347drives four LED strings, totaling 100 W. If all of the driver channels aren’t...
