The next step of the flyback design procedure is to select the other components of the power stage, like a MOSFET and rectifier diode. For a peak current mode controller like LM5155, you need to sense the current with a sense resistor to ensure the signal is sensed properly. In this video you receive hints on selecting these components, as well as practical tips for snubbers and startup circuits.
Learn more about the LM5155
https://www.ti.com/product/LM5155
