Enabling nRF5 DCDC using BLE example

[Nick_RA]

I'm looking at power consumption using nRF52 DK and PPK2. Using the example project ble_app_uart with S112 & Segger Embedded Studio.

Although I've enabled the DC/DC in the config file (I think!) I can't see any change in the power profile: the current consumption is unchanged as I vary the input voltage, it seems to be stuck in LDO mode. What am I missing here?

Thanks

1004.sdk_config.h

[Simonr]

Hi

Are you using the Power Profiler Kit (PPK or PPK2) to do current measurement or some other measurement tool? If using the PPK2, can you share some details on how you've set up the measurement, as the current should indeed decrease if you use the DCDC converter. Enabling NRFX_POWER_CONFIG_DEFAULT_DCDCEN should indeed be sufficient. the DCDCENHV is specific to the nRF52840 and nRF52833 that also have a High Voltage mode where they can be powered with up to 5.5V from I.E. the USB peripheral. There are two regulators on these chips and thus two DCDC regulator circuits.

Best regards,

Simon

[mrono]

Simonr said:

Enabling NRFX_POWER_CONFIG_DEFAULT_DCDCEN should indeed be sufficient.

But that config option is specifically for the nrfx_power -driver. I don't think the ble_app_uart example uses nrfx_power.