Development of an FPGA-based controller for the implementation of a DC-DC boost converter

• Main Authors: Cubillan, Rennell D., Dee, Robert Isaac T., Endraca, Paulo D., Enriquez, Ana Margarita G., Poblete, Hazel Diane V.
• Format: text
• Language: English
• Published: Animo Repository 2010
• Subjects: DC-to-DC converters; Electronic controllers
• Online Access: https://animorepository.dlsu.edu.ph/etd_bachelors/14679
• Institution: De La Salle University

Several battery powered devices such as notebooks, mobile phones and cameras require higher operating voltage than what its battery could supply. Boost converters are used to increase the voltage and reduce the number stacked battery cells. Boost converters are also used for smaller-scale loads such as white LEDs which require higher voltage supply than what commercially available batteries could provide. With the boost converter, the voltage is stepped up to an amount high enough to drive the load. Boost converter can either be controlled by Pulse Frequency Modulation or Pulse Width Modulation. This research designed and implemented an FPGA based controller circuit using Pulse Frequency Modulation (PFM) and Pulse Width Modulation (PWM) for the basic boost converter for driving white LEDs. The system is also capable of driving up to 4 LEDs from a DC source of as low as 3V with efficiency of up to 85%.