NRF24L01+ increased consumption in power down mode

[Sergiooo]

Hello, im a beginner in circuit design, and currently i am developing ESB device that should work on batteries.

Device simply represents a nRF24L01+ module, an ATmega48, LDO regulator and a few FETs.

All device consumes in average about 6uA, but sometimes, due to unknown reason, current consumption goes up to 350uA.

It is likely that it happens in process of soldering.

After that, device works properly, but consumes a lot of power. I found that its nRF24 module causes high power consumption

Currently im fixing a problem by simply replacing nRF24 module, but i already got a bunch of unsuitable modules.

Im looking for fix that can make device more robust. There are few cases and discussions with the same problem, but they are dead for years.

[ovrebekk]

Hi

Do you have a link to the module you use, and the old cases you found that discuss this issue?

Best regards
Torbjørn

[Sergiooo]

Yes, of course.

Here is the link to the old topic: https://devzone.nordicsemi.com/f/nordic-q-a/560/nrf24l01-problem-in-power-down-mode

Link to the modules: https://www.ebay.com/itm/20pcs-2-4GHz-NRF24l01-Wireless-Module-Mini-Power-Enhanced-SMD-Version/253048458498?hash=item3aeadd0d02:g:GeIAAOSwf~9Zadf4

Thats not a place where i bought them. I bought them from different sources (local shops in multiple cities, ebay), but they look and cost almost the same as showed above. I thought of possible counterfeit, but i found no difference between modules i bought.

Yesterday i finished some devices, checked them, and they were working fine. Today my colleague came and tested a device, he found that it started to consume high power. Only thing that he did is he changed a battery. I think that there may be a problem with flux or ESD, but i have no actual clues