Generally converter circuit having some elements like
Diode, inductor, capacitor finally connected some type filter.
These type of converter produces more ripples quantity in the
output side. Due to that converter give decreasing efficiency
decreasing to other quantities. Now remove this disadvantages
of converter. So introduces some other components otherwise
adding one more converter. Now that circuit having more
number of circuit elements so cost of circuit elements is more.
At the same time converter giving less efficiency. Now avoid
this disadvantages of converter so that two converter is coupled
[1] - [6].In this converter number of circuit element is
decreasing. At the same time getting good efficiency and cost
also decreasing [1] – [9]. But this type of circuit using
asymmetrical type switches. This type asymmetrical switch is
giving no uniform output quantities. Due to that more losses is
present which depending on the losses efficiency is here
decreasing and also affect the other parameters. Some other
circuit component also added because using more switching
frequency due to that getting hard circuit and more cost.