How to minimise power consumption for transmitter example ?

[techietech]

Hello!!

I am using transmitter example on my custom board having 10 buttons. I want to minimise the power consumption as it is powered by coin cell. I have used below tutorial to add power management library to transmitter example. 

https://embeddedcentric.com/lesson-14-nrf5x-power-management-tutorial/

I am getting ~ 195uA on idle state and ~ 300uA while transmitting. I have also verified my custom board with ble_app_uart example and I am getting ~ 3uA on idle state and ~ 300 uA while advertising.

I will appreciate any response.

Thanks 

[Jørgen Holmefjord]

Hi,

If you are referring to the radio when you say transmitting, this will have considerably higher current consumption than 300 uA while it is active in TX mode, see Current consumption: Radio.

The average current consumption, and the current consumption in sleep mode will depend on the configuration of the radio activity interval and if any other peripherals are enabled/active.

There is a lot of other tickets here on DevZone regarding optimization of current consumption. I would recommend that you use the search function and look through a few of these. If you are still not able to lower your current consumption, please include the following information in your response:

• Which SDK version are you using?
• Which chip/board/development kit are you using?
• What do you use for current measurement?
• Which example/application are you using, and have you made any modifications?

Best regards,
Jørgen

[techietech]

Hi!! 

Thank you for your reply.

I tried some tickets regarding optimisation of current consumption but got success only up to ~ 195uA.

Below is the information :

1. nRF5_SDK_17.0.2

2. PCA10040 (nrf52832)

3. Joulescope to measure current consumption.

4. nRF5_SDK_17.0.2_d674dde/examples/peripheral/radio/transmitter/pca10040. Yes I have added power management library and call the function according to the tutorial I got from here :

https://embeddedcentric.com/lesson-14-nrf5x-power-management-tutorial/