We have some problems to clarify about IC ucc28220.
We use simplis to build ucc28220 model to simulate Interleaved boost converter. After the parameter adjustment for compensation, the Bandwidth simulation result can only be up to around 1khz with enough phase and gain margin.
1.No matter how we adjust the parameters, Bandwidth cannot be above 1khz, Is this Bandwidth limited by the controller IC?
According to the datasheet of ucc28220.
2.What is the detailed operation principle here?
3.Are there simulation examples for simplis to build? Or is there a practical circuit application that duty cycle can reach 90%?
