Flyback Converter

Nazliah, Mamat (2006) Flyback Converter. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The purpose of this project is to Design a flyback converter that has an input voltage of 12V de and the output voltage of 240Vdc. Flyback converter is one of the switching de power supplies applications with electrical isolation. The transformation of de voltage from 12Vdc to 240Vdc is accomplished by using de-to-de converter circuits. The switching element used in this flyback converter is MOSFET (metal oxide semiconductor field effect transistor), which is operating completely off or completely on. This is because MOSFET has high power rating and high switching speed. The output of the MOSFET is fed to high frequency transformer. The snubber circuit is connected parallel to the MOSFET for protection. The input voltage of 12V de will be step up to 240Vdc. A high-frequency isolation transformer provides the electrical isolation in Flyback Converter. The high frequency transformers were used due to the small size and small weight. Consequently, the design circuit will deliver accurate output value with low power losses. On the whole, the undertaken task would provide to understand the operation of the Flyback Converter circuit practically.

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