How to break the loop with a transferfunction?

I am designing a synchronous boost converter. The output voltage has to be 50V. I have a mathematical design of the boost converter. I am sure that the design is correct I have verified all of the results by comparing them to another LTSpice model. My problem now is that I want to plot a Bodeplot but to do so my system has to be linearized. I did remove the switches, but my problem is now with the feed back loop which generates the varying PWM signal. When I run it I get the following error:

Simulink cannot solve the algebraic loop containing

So I have implemented a delay by using a transfer function(1/(3e-6s+1)). Because of this delay my output voltage rises to 150V

Answer 1

[Sabin]

Best place to start is the following blog:

https://blogs.mathworks.com/simulink/2015/07/18/why-you-should-never-break-an-algebraic-loop-with-with-a-memory-block/