how to achieve low power in ESB-PTX sample,in NCS 2.8.0

RE: how to achieve low power in ESB-PTX sample,in NCS 2.8.0

Hung Bui — Fri, 27 Dec 2024 15:45:07 GMT

Hi,
Please provide more detailed trace. Better if you can provide the file or you can measure using PPK2.
What's the interval between the pulse ? What's the peak mA ?

RE: how to achieve low power in ESB-PTX sample,in NCS 2.8.0

OPQ — Tue, 24 Dec 2024 02:48:57 GMT

Hi,

I have measured the power consumption after turning off the ESB(esb_disable();) in the firmware, and the measured average current is about 130uA as follow.

And after I disable esb also and the CLOCK_PLL using NRF_CLOCK->TASKS_PLLSTOP = 1; the measured average current is about 7uA.But there will be a periodic pulse current as follow.

RE: how to achieve low power in ESB-PTX sample,in NCS 2.8.0

Hung Bui — Mon, 23 Dec 2024 10:51:41 GMT

Hi OPQ,

Could you let me know what's the current consumption number you are observing ?
By default, if the chip doesn't do any activity it will enter sleep mode and you should be able to see low power consumption.
Please try to measure the current consumption after you disable UART.
You can try to change the TX interval to see how it affect the current consumption. The PPK2 would be a great tool to observe the current consumption.