Power supply configuration for external regulator (3V3 input input)

[parksj10]

I've followed the reference circuitry pretty explicitly (here), however, I want to confirm that this configuration will give me DCDCEN1 capability for power supply consumption reduction? It seems in the reference design I linked it said the functionality wasn't enabled, but I'm not sure if/why that's the case.

Furthermore, I'd like to confirm I don't have any problems with the power supply portion of the design?

Thanks!

[Kazi Afroza Sultana]

Hello,

Your design looks ok according to configuration 7 an d8. 

'' It seems in the reference design I linked it said the functionality wasn't enabled, but I'm not sure if/why that's the case.'' Could you please explain a bit details where it is written functionality is not enabled?

[parksj10]

Kazi Afroza Sultana said:

Could you please explain a bit details where it is written functionality is not enabled?

It seems like my configuration most closely matches Config. 6, which the table says DCDCEN1 functionality is not enabled:

[Kazi Afroza Sultana]

Hello,

Your schematic has DCDCEN enabled. When a DC/DC converter is enabled, external LC filters must be connected for each of the DC/DC regulator being used.  Config-6 does not have any DCDC enabled.