NUC automatically off its power while giving power supply from power source other than power adapter of NUC.

[Four2]

I have connected NUC to 12.2 v power supply and in between I have put converter which gives output of 17 - 19 v ( output value of voltage was fixed ) to the NUC. After some time NUC automatically & suddenly gets off and restarts. This process is repeating in the interval of 50 to 70 seconds.

[MOza0]

hello,

Can you specify the model number of Intel NUC PC? ​

[Four2]

Hello @MOza0​ 

I am facing this issue with NUC8i3BEH

[MLevi]

How many Amps are you pushing?

If your DC power < 90W total (voltage x amps), then it's likely your NUC is shutting down because of the power.

it's recommended that you use a 19V 5A PSU for your NUC or provide a supply with the correct voltage and wattage.

[MOza0]

We are using 150W boost converter { product Link (https://robu.in/product/150w-dc-dc-boost-converter-10-32v-12-35v-6a-step-adjustable-power-supply/?gclid=EAIaIQobChMI743Y4O-B5QIVg5WPCh295AfxEAQYBCABEgKc_vD_BwE) }

along with 12v-30Ah Li-ion battery.

Input voltage of boost converter: 10 to 12.2 V

Output Voltage from boost converter: 16 to 18 V

Our application of Intel NUC in robotics platform so cant use 19V 5A PSU.

Let me know if you have any batter options for the battery-powered application of Intel NUC. 

[MLevi]

MOza0,

I understand this unit is installed in a manufacturing (Robotics) environment and using a PSU operationally is not in scope.

One way you can test is to remove the NUC temporarily and use the PSU. If it behaves the same way, then you have other issues.

I recommend that test to eliminate power as a source of the restarts.

Is the NUC fully upgraded with BIOS and other drivers?

Mike

https://www.intel.com/content/dam/support/us/en/documents/mini-pcs/nuc-kits/NUC8i3BE_NUC8i5BE_NUC8i7BE_TechProdSpec.pdf

[h01]

we are also using the same 150W boost converter  but we don't seem to have any problem with it. 

[David_V_Intel]

Hello Four2,

Were you able to check the previous posts?

Let me know if you need more assistance.

David V

Intel Customer Support Technician

A Contingent Worker at Intel

[Four2]

Yes, I have checked previous posts. But my problem is still not solved.

[LeonWaksman]

Hello @Four2​ 

1.    Your NUC is equipped with Power Sensing Circuit. See para. 2.2.4.6.1. on page https://www.intel.com/content/dam/support/us/en/documents/mini-pcs/nuc-kits/NUC8i3BE_NUC8i5BE_NUC8i7BE_TechProdSpec.pdf . This circuit maintains power consumption below 90W. You should disable this future (in Bios), when using Power Adapter greater than 90W.

2.    Enter Bios (press F2 during boot). Advanced > Power > Secondary Power Settings. Disable Power Sense. Then press F10 (confirmed by "Y"), to save settings and exit from Bios.

Leon

[Four2]

Hello @LWAKSMAN​ 

As you have suggested,Enter Bios (press F2 during boot). Advanced > Power > Secondary Power Settings. Disable Power Sense. Then press F10 (confirmed by "Y"), to save settings and exit from Bios.But this option is not available in BIOS I have in my NUC.

[LeonWaksman]

Sorry for misleading you. My advice was based on other NUC I have (NUC8i7HVK), where this option exists. As you can see also Technical Specification for NUC8i3BEH specified Power Sensing as existing function on your system and setting available in Bios. Let wait for comments from Intel engineering @DavidV_Intel​ .

Leon

[David_V_Intel]

Hello Four2,

Were you able to check LWAKSMAN's post?

Let me know if you need more assistance.

David V

Intel Customer Support Technician

A Contingent Worker at Intel

[David_V_Intel]

Hello Four2,

Please contact us if you have any additional questions.

David V

Intel Customer Support Technician

A Contingent Worker at Intel

[David_V_Intel]

Hello Four2,

Thank you for posting on the Intel ® communities.

I would like to know how much DC power you are using with your power adapter. This is important because, as it has been mentioned before, over 90W would cause issues and even let the system turn off. Please check the specifications and let me know.

Can you please provide me with the model of power supply you are using as well as the converter? This is so I can have more details of each part.

David V

Intel Customer Support Technician

A Contingent Worker at Intel

[David_V_Intel]

Hello Four2,

Were you able to check my previous post?

Please let me know so I can assist you if needed.

Regards,

David V

Intel Customer Support Technician

A Contingent Worker at Intel

[Four2]

Hello ,

I have gone through that , and as per adapter specifications it is of 12v 3 amps which I use to give power to converter which gives power to NUC.

[LeonWaksman]

If you are using 36W (12V x 3A) Power Supply adapter and your system consumes 95W (19V x 5A), so it can be that your Power Supply adapter protection, switches your system OFF?

Leon

[Four2]

No, This is not the case. Because my power supply adapter's pic value is much higher than 95W.

[MOza0]

Power supply system details already mentioned above: https://forums.intel.com/s/question/0D70P000006UyBSSA0

[LeonWaksman]

1. O.K. So, you are using 150W Power Supply and the information in this post was not correct https://forums.intel.com/s/question/0D70P000006WMWWSA4
2. My question to Intel ( @DavidV_Intel​, @AdrianM_Intel​ )wasn't answered yet . The Technical Product Specification para. 2.2.4.6.1, page 38 https://www.intel.com/content/dam/support/us/en/documents/mini-pcs/nuc-kits/NUC8i3BE_NUC8i5BE_NUC8i7BE_TechProdSpec.pdf, specifies that this NUC has Power Sensing Circuit. This circuit powers OFF the NUC if the power consumtion exceeds 90W. This feature may be disabled in Bios. Since in this setup 90W limit is exceeded, the circuit may be the cause to shut Off. However, @Four2​ wrote that there is not such option in the Bios https://forums.intel.com/s/question/0D50P00004SlcfWSAR/nuc-automatically-off-its-power-while-giving-power-supply-from-power-source-other-than-power-adapter-of-nuc# . I don't have NUC8i3BEH and can't verify this. But, if this information is correct, the TPS have to be updated.

Leon