PPK II Source Mode + nRF52 DK v3.0.0

RE: PPK II Source Mode + nRF52 DK v3.0.0

SwRa — Wed, 15 Apr 2026 09:39:18 GMT

Hello,

Powering the nRF52832 SoC alone via the PPK2 on P22 is not sufficient for the DK to function fully, because the interface MCU still needs to be powered separately.

Regards,

Swathy

RE: PPK II Source Mode + nRF52 DK v3.0.0

ct0 — Tue, 14 Apr 2026 01:50:58 GMT

Thanks for the reply.

So powering the chip alone is not enough then, and the DK must always be powered as well.

That makes sense, but I think the documentation could use some clarification regarding that.

RE: PPK II Source Mode + nRF52 DK v3.0.0

SwRa — Mon, 13 Apr 2026 11:34:18 GMT

Hello,

[quote user=""]So is powering from PPK considered to be external power or not?[/quote]

The PPK2 acting as a source meter is effectively an external supply connected to P22 (VDD_nRF). But that should not be an issue in your case. Soldering SB12 is optional. You can power the DK using USB and carry out power measurements. The USB powers the interface MCU (needed for your firmware to boot/debug), while the PPK2 via P22 powers only the SoC. This is safe because P22 and the USB/P21 supply rail are on separate domains after cutting SB9.

Best Regards,

Swathy