Closed Loop DC-DC Converter For LED Driver Circuit

Muazatul Adweah, Ghazali (2013) Closed Loop DC-DC Converter For LED Driver Circuit. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This report develops Closed-loop DC-DC converter for LED driver circuit. The aim of this project is to understand the performance of LED driver circuit by using closed loop Buck Converter. The methodology of this project consists of two steps which is circuit design in simulation through Orcad Pspice software and continued with hardware development. Then the analysis is conducted through observation of result obtain from simulation and hardware. The method chosen for closed-loop Buck is Voltage-mode Controlled. By using this method, the output voltage could be maintained although the temperature changes (load disturbance). The simulation obtains result of input disturbance and load disturbance of open-loop and closed-loop system. For closed-loop system, the controller is used to improve the dynamic performance of DC-DC Converter by achieving a robust output voltage against load disturbance. After get result from simulation, the result of output voltage also could be seen through hardware. As a conclusion, the theory about closed-loop DC-DC converter for this project had been understood clearly.

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