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Effectively Driving LED Arrays with Passive Electric Circuits for Dual Function Automotive Applications
Technical Paper
2004-01-0222
ISSN: 0148-7191, e-ISSN: 2688-3627
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Language:
English
Abstract
Many LEDs are typically required to source sufficient light for automotive exterior applications. Maintaining even illumination requires the drive current to be well controlled for all the LEDs in an array. This can be challenging in the voltage driven automotive environment when dual level operation is desired, such as for combined stop and tail function. A current source in the form of an LED Driver Module (LDM) can be employed to drive the LED array. However, a passive resistor network may be capable of driving the LED array with a reduction in both cost and complexity when compared to an LDM solution. The advantages and disadvantages of various passive resistor network configurations for dual level operation will be examined.
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Authors
Citation
Wells, B., Mallory, D., and Hodapp, M., "Effectively Driving LED Arrays with Passive Electric Circuits for Dual Function Automotive Applications," SAE Technical Paper 2004-01-0222, 2004, https://doi.org/10.4271/2004-01-0222.Also In
References
- SnapLED 150 LEDs technical data LumiLeds publication No. DS08 2002
- SuperFlux LED Categories and Labels LumiLeds Application Brief AB20-7 2003
- SuperFlux and SnapLED Emitter Forward Voltage Data LumiLeds Application Brief AB20-3B 2002