Paper Info
Title
12.4 A 7.5W-output-power 96%-efficiency capacitor-free single-inductor 4-channel all-digital integrated DC-DC LED driver in a 0.18μm technology
Abstract
Today's general lighting development is driven by improvements in semiconductor-based systems. It is expected that solid-state lighting (SSL) will dominate general lighting in the near future. Two main challenges that must be met in SSL are the reduction of the bill of materials (BOM), and an increase in functionality. In [1], a floating DC-DC buck controller is presented. This controller adds to the BOM, as every device of the power path is discrete and the ASIC can only drive a single LED string. In contrast to that, [2] offers a high-current fully integrated power stage. However, several external passives are introduced and the technology inhibits stacking multiple LEDs for high luminous efficacy. To overcome this, [3] presents an integrated HV power path with only the inductor as an external component. Ina parallel development, [4] reports an LED driver similar to [3], but that uses a discrete Schottky diode for asynchronous rectification. In fact, [1-4] demonstrate single output LED drivers without additional functionality or full color spectrum. To overcome these drawbacks in light spectrum and control, [5] presents a 3-channel LED driver. However, the external passives are numerous, which significantly impairs the overall BOM.
Year
DOI
Venue
2015
10.1109/ISSCC.2015.7063005
ISSCC
Keywords
Field
DocType
transistors,electric potential,inductors,light emitting diodes,color,capacitors
Control theory,Capacitor,Computer science,Inductor,Application-specific integrated circuit,Electronic engineering,Luminous efficacy,Light-emitting diode,Transistor,Electrical engineering,Bill of materials
Conference
Citations 
PageRank 
References 
3
0.87
3
Authors
7
Name
Order
Citations
PageRank
Stefan Dietrich142.59
Sebastian Strache231.54
Bastian Mohr382.81
Jan Henning Mueller493.58
Leo Rolff542.97
Ralf Wunderlich67627.94
Stefan Heinen72214.08