Current consumption issue with the Custom board

[venu gopal]

Hi,

we are working on beacon project, we are facing current consumption problem.

When we dump the code in nRF52DK we are getting around 20(uA) current consumption.

When we dump the same code in our customized board with nRF52810 we are getting 5.5(mA) current consumption.

We are using SDK14.2 version. We need current consumption in micro-amps.

I have attached my schematic along with this post.

Please give us solution regarding this issue.

Nordic_nRF52810.pdf

Thanks and Regards,

venu

[ketiljo]

Hi Venu

Do you measure the high current draw on the whole board or just the nRF52810? If it's the whole board, are you sure all the other ICs are turned off or is in low power mode? 

best regards,

Ketil Aas-Johansen

[venu gopal]

Hi Ketiljo

we removed every component apart from nRF52810 and battery circuit from our board.

our custom board now contain only nordic chip and battery circuit which is shown in schematic.

Now we are getting arround 2.5(mA). 

we are trying to reduce power for past 3 days.

In our custom board only beacon pogram is running 

Give some software solution also to reduce power consumption

we require current consumption in micro-amps.

Thanks and Regards,

venu

[ketiljo]

Sounds like a floating input. Make sure you have a defined logic level on all inputs to the nRF52.

Also isolate VDD_nRF and use a external power supply.

cheers,

Ketil

[venu gopal]

I have made all floating pins as output and made as low.

Given separate external supply for Nordic chip and isolated from everything else 

i got 1.8(mA) current consumption

what can i do next......?????

[ketiljo]

Must be a mechanical or solder issue then.