The maximum input voltage that can be applied to the TPS54314PWPR is 42V, but it's recommended to keep it below 40V for reliable operation.
The inductor value depends on the output voltage, output current, and switching frequency. A good starting point is to use the inductor selection guide in the datasheet or use an online inductor selection tool.
The EN (enable) pin is used to turn the converter on and off. It's an active-high input, so connect it to VIN or a logic high signal to enable the converter, and connect it to GND or a logic low signal to disable it.
The TPS54314PWPR is a voltage-mode regulator, and compensation is required for stability. Use the compensation network shown in the datasheet, and adjust the values based on your specific design requirements.
The maximum output current that the TPS54314PWPR can deliver is 3A, but it's recommended to derate the output current based on the ambient temperature and the input voltage.