Riassunto analitico
This thesis deals with the design of an isolated Flyback converter with the Quasi-resonant boundary mode operation. The converter has the ability to offer wide input and output range, no Opto-Isolator required, provide a constant current and constant voltage regulation. The best application for the purposed converter are in the Industrial and automotive applications, Medical and isolated offline housekeeping power supplies, electric vehicles and battery stacks. General specification of the converter are to provide constant 12V of output voltage, up to 3A of output current and 36W of output power. The idea is to improve the efficiency of the converter and to reduce the cost with different alternatives based on different possible combination of MOSFET and Schottky diodes. This work includes the details of performances, about the input and out parameters, behavior with different devices in terms of power losses and efficiency offered by the converter with the help of graphs and output waveforms. To perform this task, the simulations are performed with the help of LTspice.
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Abstract
This thesis deals with the design of an isolated Flyback converter with the Quasi-resonant boundary mode operation. The converter has the ability to offer wide input and output range, no Opto-Isolator required, provide a constant current and constant voltage regulation. The best application for the purposed converter are in the Industrial and automotive applications, Medical and isolated offline housekeeping power supplies, electric vehicles and battery stacks. General specification of the converter are to provide constant 12V of output voltage, up to 3A of output current and 36W of output power. The idea is to improve the efficiency of the converter and to reduce the cost with different alternatives based on different possible combination of MOSFET and Schottky diodes. This work includes the details of performances, about the input and out parameters, behavior with different devices in terms of power losses and efficiency offered by the converter with the help of graphs and output waveforms. To perform this task, the simulations are performed with the help of LTspice.
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