TMS320F28379D-Q1: Input Power Circuit

Abhishek,

            Decoupling capacitor requirements are mentioned in the device datasheet. This is solely from the MCU perspective. Depending on what else is on your board, additional considerations may be warranted. Choice of what LDO (or DC-DC converter) to choose depends on the total current requirement of all the components on your board. Of course, you want to provide for at least 30-40% margin to account for instantaneous demands and to ensure the supply voltages to the MCU never violate the datasheet requirements. Since, much of the decisions are very design-specific, it is hard to generalize. If your application is space-based, you need to use components designed for that environment.