Automatic control of mode (LDO and DCDC)

RE: Automatic control of mode (LDO and DCDC)

bjorn-spockeli — Wed, 25 Oct 2017 10:23:18 GMT

Happy to help :) I would appreciate if you could mark the answer as accepted/correct by clicking the check mark in the grey circle to the left of the answer.

RE: Automatic control of mode (LDO and DCDC)

NY — Wed, 25 Oct 2017 10:20:49 GMT

Thank you for your reply. I understood. It's thanks to you. regards.

RE: Automatic control of mode (LDO and DCDC)

bjorn-spockeli — Wed, 25 Oct 2017 06:54:05 GMT

Hi NY,

The nRF52832 will automatically turn on and off its internal regulators and DCDC Buck converter(if enabled with sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE) ) depending on which peripherals that are active to optimize the current consumption.

So calling the sd_power_dcdc_mode_set() function with NRF_POWER_DCDC_ENABLE as input will simply enable the DCDC and then the nRF52832 will handle everything from there.

Thus, you only need to call sd_power_dcdc_mode_set() once in main().

Note: Make sure that you have the L2 and L3 inductors that are needed by the DCDC if you're using a custom board, see the nRF52832 reference schematic.

Best regards

Bjørn