Other Parts Discussed in Thread: UCC28600,
I have a question about the loop design with tl431. I designed a flyback with the ic ucc28600 and I'm searching for a guide, how to realize the feedback loop. I found a guide from ti (slua671) but I'm not sure, if this guide is correct. In this article a type 2 compensation network is described. But they use a C and a RC combination in the opamp circuit. In some other documents (e.g. "The TL431 in the Control of Switching Power Supplies" from OnSemi and literature there is only one condensator instead and the solution is very different from the ti literature. Furthermore in the literature of onsemi the pole depends on the capacity of the optocoupler. Which solution is correct?