A Digital boost converter to drive white LEDs

@article{Chang2008ADB,
  title={A Digital boost converter to drive white LEDs},
  author={Wei-Hsu Chang and Hung-Shou Nien and C. Chen},
  journal={2008 Twenty-Third Annual IEEE Applied Power Electronics Conference and Exposition},
  year={2008},
  pages={558-564}
}
A constant off-time boost converter with digital control was proposed and implemented with a field-programmable-gate-array (FPGA) to power white light emitting diodes (WLEDs) for hand-held applications. In the application, a lithium-ion battery with voltage ranging from 3.3 V to 4.2 V was used to light a serial connection of 4 WLEDs drawing current levels from 2 mA to 20 mA. A constant off-time digital PWM controller was chosen to increase the dimming resolution. For the compensator design, a… CONTINUE READING
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