I am building a 1kW PSU that is controlled with DSP MCU. It requires a lot of features such as synchronous rectification, bidirectionality, current regulation. Those features make the PSU very exotic and I was unable to find any suitable PWM control IC. My current problem is that the PSU is unable to regulate current quickly enough and I need to find a solution for that.
It is quite easy to build an analog CMC PWM controller model using ideal analog components and switches. But I've never seen anyone do that in practice and that suggests me that it might be a terrible idea. There might be complicated problems such as noise pickup or timings mismatches.
Does anyone knows if it is a useful practice to build a PWM controller from discrete components or not and why?