Power management of nRF52832 based custom board

RE: Power management of nRF52832 based custom board

Amanda Hsieh — Tue, 22 Oct 2019 13:41:39 GMT

Hi Bojan,

You could use the function sd_power_dcdc_mode_set() to enable the DCDC converter to have the lowest power consumption. See this post.

The SoftDevice function sd_ble_gap_tx_power_set() can set the TX power. Please see Radio current consumption (Transmitter).

You can use them to reduce power consumption while an application running, but they are not necessary for the System off mode. Please see the System OFF mode.

-Amanda H.

RE: Power management of nRF52832 based custom board

bojan — Tue, 22 Oct 2019 11:31:32 GMT

Thanks, Amanda Hsieh!

I think putting the device into deepest sleep Power OFF mode and waking/resetting it with external button would be the way to go for me!

Once I implement that, will try to measure current consumption by the help of Power Profiler Kit.

I was reading somewhere on this forum that the set of the two following commands should help reduce power consumption even more:

sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE);
sd_ble_gap_tx_power_set(0);

I have external inductors on my board for DCDC:

What is your experience about those commands? Do I need to implement them before going to System OFF sleep mode?

Sincerely,

Bojan.

RE: Power management of nRF52832 based custom board

Amanda Hsieh — Tue, 22 Oct 2019 11:11:35 GMT

Hi,

[quote user=""]What would be the most appropriate design example for me to start with? How to enable/disable BLE stack?[/quote]

You can refer to the Power Profiling Application which is implemented with the system off mode and enable/disable BLE stack.

-Amanda H.