Design Switch Mode Power Supply By Using Boost Converter Topology

Khairul Izzat , Mohamad Sahimi (2008) Design Switch Mode Power Supply By Using Boost Converter Topology. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This project is about design a Switch Mode Power Supply (SMPS) using a boost topology. A switched-mode power consists of converter and a controller circuit that controls the switch of the converter. A converter is a circuit that is used to amplify or reduce the voltage by using switches like power transistor (MOSFET, IGBT and etc) where it will be operates on and off in a high frequency and the control circuit will be the one which control the switching frequency. A boost topology is a circuit where the input voltage can be increased to a demanded value. In this project about designing a SMPS, a feedback controller will be added to a boost converter where it will be able to maintain its output voltage even there are changes to its load or input voltage. To achieve this result, the feedback will control the duty cycle (D) of the converter. The feedback controller will be designed to check the output voltage and give signal and changed the value of D. The controller circuit is compilation of Error Amplifier and Pulse Width Modulator. All of this project will be analyzed and simulated through electrical simulation software such as PSpice and Matlab. Each steps of designing the SMPS will be describe thoroughly so that the report of this project will become a reference for designing SMPS in the future.

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