Power management of nRF7000 using nPM1300

RE: Power management of nRF7000 using nPM1300

Ressa — Tue, 13 Jan 2026 12:45:06 GMT

Hi Andrew,

Similarly I don't see any issue using unregulated VSYS as supply for nRF7000 and then using VOUT for IOVDD. Just you need to make sure about unregulated voltage range not to exceed the limits for nRF7000. Using nPM6001 has been for this purpose(to ensure the voltage range).

RE: Power management of nRF7000 using nPM1300

Ressa — Tue, 13 Jan 2026 12:30:25 GMT

Hi Sean,

Thanks for the clarification. Using unregulated VSYS for nRF7002 (and other circuits) is possible of course as long as it does not exceed the current limit which is more than 1 A. Supplying nRF7002 directly from battery is also possible but the fuel gauging will not be accurate enough, for accurate fuel gauging all current must pass though PMIC. Using VSYS for powering up nRF7002 with pass through VSYS is better option.

RE: Power management of nRF7000 using nPM1300

andychess — Fri, 09 Jan 2026 07:25:16 GMT

No problem;-).
I would really like a clear answer to the specific question, whether the nRF7000 can be powered directly from the nPM1300. There is, afaik, no specific datasheet or EK for the nRF7000, so we are reliant on information from Nordic. We're planning to move from the Thingy91X to our own custom design in March and don't want to waste time and money either on a design that is not reliable or on additional BOM components 'just in case'.
As contructive feedback on the Thingy91X (of which we have three), the inclusion of the nRF7002 and the associated nPM6001 seem fairly pointless, given that the nRF9151 can't run the full WiFi stack. I would prefer to see a tailored device for location finding which would fit better with the capabilities of the nRF9151.

RE: Power management of nRF7000 using nPM1300

FARLY7 — Thu, 08 Jan 2026 22:41:11 GMT

Completely fair, apologies 😄.. but I thought we were essentially asking the same question and I was ticking it along!

RE: Power management of nRF7000 using nPM1300

andychess — Thu, 08 Jan 2026 09:54:53 GMT

I don't like to be rude, but my original question seems to have been hijacked!

RE: Power management of nRF7000 using nPM1300

FARLY7 — Tue, 06 Jan 2026 22:27:27 GMT

Hi Ressa,

Thanks for your response.

Indeed, I see that "Table 16: Transmit current consumption (QFN package)" of the nRF7002 datasheet shows:

So, while some 2.4GHz schemes would allow the nRF7002 to be powered by the nPM1300's buck regulator, others do not.

However, after further reviewing the nRF7002 datasheet for a better understanding, it appears that the nPM1300 is not required to power the nRF7002? My understanding is now that:

The nRF7002 has its own Buck regulator that can be used instead of the nPM1300's buck, and it is intended to be supplied directly from the battery via the VBAT pin.

This would allow me to only use the nPM1300 to power my nRF54, nRF9151, and sensors, and connect the nRF7002 directly to the battery via VBAT. The nRF54 would then turn the nRF7002 and its buck regulator on or off via the BUCK_EN pin.

Is my understanding correct here? Am I missing any issues? Does powering the nRF7002 "outside" of the nPM1300 cause any issues with fuel gauging, for example?

EDIT: Or should I connect the nRF7002's VBAT pin to the nPM1300's "pass through" VSYS pin, just like the nRF9151 is meant to be used with the nPM1300, which also has its own internal buck regulator?

Thanks,

Sean

RE: Power management of nRF7000 using nPM1300

Ressa — Tue, 06 Jan 2026 14:42:06 GMT

Hi Sean,

Please note that max current consumption of nRF7002 is 262 mA which is higher than supply current of nPM1300 bucks. If you check thingy 91x , the WiFi chip supply coming from nPM6001.
But if you are only going to use passive scan mode (no TX transmission) then I suppose it is possible with nPM1300 bucks. You just need to make sure never exceed 200 mA current (even for short period of time) otherwise there will be unknown behaviors.

Best regards,
Ressa

RE: Power management of nRF7000 using nPM1300

FARLY7 — Mon, 05 Jan 2026 07:10:24 GMT

I'm also interested in knowing if it is possible to use the nRF7002 with nPM1300 :)

I have a design with nPM1300, nRF54, nRF7002, and nRF9151.

However, only the nRF9151 or the nRF7002 will be active at one time.

RE: Power management of nRF7000 using nPM1300

Ressa — Tue, 30 Dec 2025 15:34:44 GMT

Hi Andrew,

Please expect some delay as it is holiday season. I will try to get back to you by end of this week.

Best regards,
Ressa