Hey guys,
My laptop has :
x2 USB 3.1 Gen 1 Type A ports
x1 USB 3.1 Gen 2 Type C port / Thunderbolt 3 combined.
x3 Noctua fans :
https://noctua.at/en/nf-a12x15-pwm/specification
Wall power outlet is not an option since those fans are attached to a cooling pad and I travel a lot ,therefore I need to supply them via USB port to stay mobile.
From what I learned so far I will need USB boost converter , to step up from 5V to 12V . This is where I get lost since I found that there will be current reduction due to voltage stepping and the converter efficiency which is about ~88%. There is also difference in USB power output depending on the generation and whether it is powering up a device or it is charging it via Superspeed standard.
Looking over USB Specifications I found the following :
USB 1.0 , 2.0 are capable of delivering up to 0.5A
USB 3.0 it moves up 0.9A with charging capability up to 1.5A
USB 3.1 claims to deliver 1.5A and 3A over the 5V bus. ( whether those values are implied when powering up or charging a device, it was not specified.)
Now if I need to deliver 0.4A to run my fans would that be possible with any of those USB ports and If so how exactly?
My intentions are to be able to run those fans via the USB port if possible at full speed.
I also own 3.0 USB non powered hub to which I want to plug those fans if it has enough juice to supply them.
https://www.trendnet.com/products/usb-hub/4-port-usb-3.0-mini-hub-TU3-H4E
I will be very grateful if you can help me out. I am not sure if this was the proper section for such kind of questions, and excuse me for my poor English!
Best Regards.
My laptop has :
x2 USB 3.1 Gen 1 Type A ports
x1 USB 3.1 Gen 2 Type C port / Thunderbolt 3 combined.
x3 Noctua fans :
Max. input power (each) 1,56 W |
Max. input current (each) 0,13 A |
Operating voltage 12 V |
Wall power outlet is not an option since those fans are attached to a cooling pad and I travel a lot ,therefore I need to supply them via USB port to stay mobile.
From what I learned so far I will need USB boost converter , to step up from 5V to 12V . This is where I get lost since I found that there will be current reduction due to voltage stepping and the converter efficiency which is about ~88%. There is also difference in USB power output depending on the generation and whether it is powering up a device or it is charging it via Superspeed standard.
Looking over USB Specifications I found the following :
USB 1.0 , 2.0 are capable of delivering up to 0.5A
USB 3.0 it moves up 0.9A with charging capability up to 1.5A
USB 3.1 claims to deliver 1.5A and 3A over the 5V bus. ( whether those values are implied when powering up or charging a device, it was not specified.)
Now if I need to deliver 0.4A to run my fans would that be possible with any of those USB ports and If so how exactly?
My intentions are to be able to run those fans via the USB port if possible at full speed.
I also own 3.0 USB non powered hub to which I want to plug those fans if it has enough juice to supply them.
https://www.trendnet.com/products/usb-hub/4-port-usb-3.0-mini-hub-TU3-H4E
I will be very grateful if you can help me out. I am not sure if this was the proper section for such kind of questions, and excuse me for my poor English!
Best Regards.