Design and implementation of an isolated power factor correction using full bridge topology

The conventional topology for non-isolated boost converter has been commonly used in different ac/dc and dc/dc applications. Actually ac/dc power supplies with power-factor correction (PFC) is almost solely implemented with the boost topology. In various battery-powered applications boost topology is also used for generating high output voltage from comparatively low battery voltage. However in some applications, Use of a boost converter with a galvanically isolated input and output may be advantageous. For e.g. fault tolerant power systems that use a dual ac-input architecture which can be implemented with isolated boost converters is used by fault tolerant power systems. In fact the reduced number components while we compare it with the implementation with non isolated boost converter in application which requires input as an dual ac, is offered using the implementation isolated boost-converter. Similarly while using these application where power supply is required (both ac dc inputs), to provide required safety for isolation between inputs the isolated boost converter could be applied. Thus far, isolation transformer is already proposed for number of boost topologies utilization. These circuits increased voltage range which effects on other components of the circuit like switches or diodes as result the parasitic ringing of the leakage inductance in the transformer including output capacitance of the switching devices. To avoid these problem (parasitic ringing voltage) these converters rely work with various snubber effect having affected on efficiency and also useful for limit the switching frequency.