NRF52480 DK external Supply

RE: NRF52480 DK external Supply

ock — Tue, 23 Jan 2018 12:51:37 GMT

Thanks a lot!

RE: NRF52480 DK external Supply

MartinBL — Tue, 23 Jan 2018 12:26:47 GMT

Sorry. I forgot that you were using a development kit and assumed you were working on a custom board. Please refer to this documentation to see how to connect 5V to the kit: infocenter.nordicsemi.com/.../hw_power_supply.html

RE: NRF52480 DK external Supply

ock — Tue, 23 Jan 2018 12:08:14 GMT

@Martin Børs-Lind or what about the VIN 3-5 V pin?

RE: NRF52480 DK external Supply

ock — Tue, 23 Jan 2018 11:49:41 GMT

I used the External Supply pins (P21). I could not find the V_DDH pin though.

edit: Okay so if I connect +5V to VDD nRF_HV it should work right?

RE: NRF52480 DK external Supply

MartinBL — Tue, 23 Jan 2018 10:38:26 GMT

Hi,

What pins are you using when supplying the chip with +5V? You should only connect such a high voltage to the V_DDH pin. This voltage will then be regulated down to safe levels internally in the chip. Like this:

It sounds like you have connected 5V directly to the VDD pins. This is way above maximum operating voltage and will likely damage your chip. Please refer to the Power supply section in the Product Specification.