How do I run the nRF54L15-DK in LDO mode?

RE: How do I run the nRF54L15-DK in LDO mode?

Kenta — Thu, 28 Nov 2024 00:36:36 GMT

Hi Runar.

I wrote the following in .overlay:

&vregmain {
regulator-initial-mode = <NRF5X_REG_MODE_LDO>;
};

I'll try measuring with this setting.

Thank you.

Best regards.

RE: How do I run the nRF54L15-DK in LDO mode?

runsiv — Wed, 27 Nov 2024 14:25:52 GMT

It appears that with the release of NCS 2.8 it was moved from Kconfig to the devicetree

For DCDC

&reg1 {

regulator-initial-mode = <NRF5X_REG_MODE_DCDC>;

};

If you turn of the DCDC it will use the LDO

Regards

Runar

RE: How do I run the nRF54L15-DK in LDO mode?

Kenta — Wed, 27 Nov 2024 13:30:03 GMT

Hi, runsiv.

To compare the current values in DCDC mode and LDO mode, I didn't know how to write prj.conf to set it to LDO mode, so I thought I could set it to LDO mode by calling

nrf_regulators_vreg_enable_set(NRF_REGULATORS, NRF_REGULATORS_VREG_MAIN, false);

If it can be set with Kconfig(prj.conf), it would be helpful if you could tell me how to write it.

Best regards.

RE: How do I run the nRF54L15-DK in LDO mode?

runsiv — Wed, 27 Nov 2024 12:46:25 GMT

I suspect so, I have not verified it yet, but why would you like to turn of the DCDC in main instead of using Kconfig option?

Regards

Runar

RE: How do I run the nRF54L15-DK in LDO mode?

Kenta — Wed, 27 Nov 2024 04:39:10 GMT

I am using nRF Connect SDK v2.8.0.