NRF52840-DK Power From 5V Power Supply

RE: NRF52840-DK Power From 5V Power Supply

user112309 — Wed, 05 Jan 2022 10:58:53 GMT

Ok, I'll give this a try. Thanks

RE: NRF52840-DK Power From 5V Power Supply

user103347 — Mon, 03 Jan 2022 12:18:25 GMT

Hello!

[quote user="EAkeila"]What I really want is to power it from 5V voltage.[/quote]

Then you could for instance connect the 5V to the VDD line instead of through the USB.

[quote user="EAkeila"]I already connected the USB to the J3 connector and I used the setup I mentioned above, it doesnt seem to work.[/quote]

For that way to work you'd have to flip the SW9 switch to USB.

Best regards,

Elfving

RE: NRF52840-DK Power From 5V Power Supply

user112309 — Wed, 29 Dec 2021 23:04:22 GMT

Thanks Elfving for your reply. Currently when VDD is selected, the nRF chip is powered from 3 or 3.3V. What I really want is to power it from 5V voltage. I have another SPI circuit which is powered using 5V and I need the nRF SPI GPIO output voltage to match the other SPI circuit.

I already connected the USB to the J3 connector and I used the setup I mentioned above, it doesnt seem to work. So I'm not sure if this is the way to power the chip from 5V using the DK. or if there is another way. Thanks

RE: NRF52840-DK Power From 5V Power Supply

user103347 — Wed, 29 Dec 2021 12:21:43 GMT

Hello Ehad!

I am a little bit confused as what you are trying to do and what the issue is. If you want to use the programming and debugging chip along with the main nRF52840 then you should connect the USB connector to J2 and set SW9 to VDD. You can power just the nRF using J3 however, if that is what you prefer.

I should also mention that due to the holidays you might have to expect both limited help and slower responses on DevZone.

Best regards,

Elfving