Using USB 3.2 gen2 for Power Delivery

[ThaiTaffy]

So my motherboard supposedly supports USB- bla blah, who knows with USB. That indicates it supports 20v at 5amps, from the type-c port on the back. I'm far from clever but my idiot brain wonders where that 20v is coming from? My motherboard has a boost transformer attached to the motherboard somewhere? How many are familiar with powering monitors over usb-c from your pc?
I don't need to use it I have wall adapters but if I take my pc through the airport in carry on, I have a feeling plugging it in to an outlet might be nice maybe even some mining while I wait for my flight.

 

[ThaiTaffy]

Well i use my rear USB C to charge my Samsung S20+ 5g using a C to C cable and it charges pretty quick.

Just looked, and it does say fast charging.

You phone is probably drawing Like 18w I would guess for a short time I'm talking about using a monitor for hours.

 

[TheLostSwede]

So my motherboard supposedly supports USB- bla blah, who knows with USB. That indicates it supports 20v at 5amps, from the type-c port on the back. I'm far from clever but my idiot brain wonders where that 20v is coming from? My motherboard has a boost transformer attached to the motherboard somewhere? How many are familiar with powering monitors over usb-c from your pc?
I don't need to use it I have wall adapters but if I take my pc through the airport in carry on, I have a feeling plugging it in to an outlet might be nice maybe even some mining while I wait for my flight.

Sorry, but your assumption is flawed here.
The USB-C spec is still 5V/900mA, although most ports deliver 1-1.5A these days.
Without USB PD support, you'll get nowhere near those kind of Voltages.

 

[ThaiTaffy]

Sorry, but your assumption is flawed here.
The USB-C spec is still 5V/900mA, although most ports deliver 1-1.5A these days.
Without USB PD support, you'll get nowhere near those kind of Voltages.

Doesn't USB 3.2 gen2 indicate PD 20v as a standard? I know there was a lot of shenanigans going on with USB and HDMI standards being all bull but the current spec states usb 3.1 can handle like 100w

The spec sheet for my motherboard seems useless I'll take a look at the manual and any marketing bull in a bit when I'm free see if it states anything.

 

[tabascosauz]

Doesn't USB 3.2 gen2 indicate PD 20v as a standard? I know there was a lot of shenanigans going on with USB and HDMI standards being all bull but the current spec states usb 3.1 can handle like 100w

3.2 Gen 2 doesn't indicate anything. It only indicates 10Gbps speed. By itself it does not include Power Delivery, nor any of the Alternate Modes (Thunderbolt/Displayport/HDMI).

They may look nice and snazzy but our Gen 2 and Gen 2x2 USB-C ports (aside from boards with Thunderbolt) on desktop motherboards are about as primitive as it gets. Mortar Wifi is no exception. They are nothing compared to the Alt Mode/Thunderbolt capable laptop USB-C ports.

It would also be kinda weird to run portable monitors off the Gen2 USB-C back there (doesn't carry video). You already have HDMI/DP out if you have APU, or the dGPU. Only desktop USB-C parts I'm aware of that can run a portable monitor would be RTX20 FE/RX6000 reference, and Thunderbolt boards with DP IN, and no guarantees about power delivery (idk about TB).

 

[ThaiTaffy]

3.2 Gen 2 doesn't indicate anything. It only indicates 10Gbps speed. By itself it does not include Power Delivery,

See that's where the standard is a load of crap half the info I can find states these fantastic wattage numbers then you and many other sources are saying 5v7.5w guess it's a usb syndicate or something.
Thanks anyway my dreams of using my tower at the airport include a multisocket now.

 

[tabascosauz]

See that's where the standard is a load of crap half the info I can find states these fantastic wattage numbers then you and many other sources are saying 5v7.5w guess it's a usb syndicate or something.
Thanks anyway my dreams of using my tower at the airport include a multisocket now.

Think the base USB-C spec like still 15W or something. Asus has some battery powered portable screens but some of them are bloody expensive

Wouldn't you want to set up someplace cozy anyway? Like one of those cubicle computer rooms in the heathrow lounges, I doubt an extra power adapter/cable would be much a difference there. I used to fly with a NCASE (13L) and SG05 (11L) and you couldn't pay me to just randomly whip it out and plug it in the middle of the terminal.

 

[ThaiTaffy]

Think the base USB-C spec like still 15W or something. Asus has some battery powered portable screens but some of them are bloody expensive

Wouldn't you want to set up someplace cozy anyway? Like one of those cubicle computer rooms in the heathrow lounges, I doubt an extra power adapter/cable would be much a difference there. I used to fly with a NCASE (13L) and SG05 (11L) and you couldn't pay me to just randomly whip it out and plug it in the middle of the terminal.

Nahh not the middle if the terminal but sometimes I'm stuck in the airport between flights for almost a day so being able to do some work while I'm there would be nice.
I posted another thread about a battery bank for the screen.I did look at battery options but I'm not a fan of having them internal I'd rather go bulky and use a powerbank.

So what is the voltage required for a samsung s20+ 5g to fast charge? surely it is more than 5v 1.5A. The C port must be supplying enough for it to enable fast charge.

Since the board runs at 12v I would take a guess at 12v if it has a QC feature.

 

[TheLostSwede]

So what is the voltage required for a samsung s20+ 5g to fast charge? surely it is more than 5v 1.5A. The C port must be supplying enough for it to enable fast charge.

Thanks for the thread jacking, but I'll help answer your question anyhow.
Samsung calls 25 W Super Fast charging, so not that high compared to some other brands, but they also have a 45 W mode.
Asus doesn't specify the power of the USB 3.2 Gen 2x2 port or the other USB-C porton on your board, but it seems like 12V/2A is an option.

Doesn't USB 3.2 gen2 indicate PD 20v as a standard? I know there was a lot of shenanigans going on with USB and HDMI standards being all bull but the current spec states usb 3.1 can handle like 100w

The spec sheet for my motherboard seems useless I'll take a look at the manual and any marketing bull in a bit when I'm free see if it states anything.

You're mixing up multiple, different, but complimentary standards.

USB PD is separate from the USB data standards. Most phones with USB-C available today, only supports USB 2.0 for data transfers, but can support up to 100 W charging or even more in some cases. Most of these phones don't rely on USB PD for charging, but proprietary charging standards, of which Qualcomm's QC is one.
Not all cables can handle 100 W or even 65 W, which is commonly the step below when it comes to USB-C chargers. More often than not, high Voltage and current cables are limited to USB 2.0 for data, as to not to make the cables too rigid.

Even if a device has a USB-C port, it doesn't magically mean it can be powered via USB-C, as USB-C ports are only guaranteed to be two-way for data, not power.
Yes, it's a mess, but it's something we're going to have to live with.

 

[Deleted member 24505]

Deleted the question, thought it was relevant but seemed i offended you, shrugs. I wont bother any thread you're in charge of again ok.

 

[1freedude]

While I offer no real answer, I can say that the mb USB ports must offer at least n watts and xbps. Thats where the standard comes in...

I am completely enthralled by PD. tabasco mentioned the video cable interfaces used for monitors, and USB is rarely used on desktops....but almost all of my monitors have a USB hub, and USB 3 to boot. I cant wait to use USB PD for the hub and powering the peripheral.

A boost transformer from 12v to 24v is doable in your case. Then, a power connection from desktop to monitor is always on tap. You could put a PD chip on the output of the xfmr, or a jack...

 

[TheLostSwede]

Deleted the question, thought it was relevant but seemed i offended you, shrugs. I wont bother any thread you're in charge of again ok.

Sorry, I was being a bit rude, but it was also quite irrelevant to what the OP asked.

While I offer no real answer, I can say that the mb USB ports must offer at least n watts and xbps. Thats where the standard comes in...

I am completely enthralled by PD. tabasco mentioned the video cable interfaces used for monitors, and USB is rarely used on desktops....but almost all of my monitors have a USB hub, and USB 3 to boot. I cant wait to use USB PD for the hub and powering the peripheral.

A boost transformer from 12v to 24v is doable in your case. Then, a power connection from desktop to monitor is always on tap. You could put a PD chip on the output of the xfmr, or a jack...

USB Type-B input I presume? Which is not what's being discussed here.
Most decent monitors have had that for years, but that's again 5V 900mA.

USB PD doesn't go higher than 20 V and either which way, most USB-C devices that don't incorporate a battery, can't be powered by USB-C unless explicitly mentioned.

 

[1freedude]

Sorry, I was being a bit rude, but it was also quite irrelevant to what the OP asked.


USB Type-B input I presume? Which is not what's being discussed here.
Most decent monitors have had that for years, but that's again 5V 900mA.

USB PD doesn't go higher than 20 V and either which way, most USB-C devices that don't incorporate a battery, can't be powered by USB-C unless explicitly mentioned.

I said, "I cant wait...," knowing that the tech is not in production yet.

As far as PD goes, the potential input is usu very wide, and 24v was a simple number that satisfies voltage requirement for the max 20v PD can deliver.

PD power supplies are just that - supplies that negotiate potential required by the peripheral. I have a PD to barrel plug that requests 20v, and it's spec'd to handle 100w. Nothing about batteries involved.

 

[TheLostSwede]

I said, "I cant wait...," knowing that the tech is not in production yet.

As far as PD goes, the potential input is usu very wide, and 24v was a simple number that satisfies voltage requirement for the max 20v PD can deliver.

PD power supplies are just that - supplies that negotiate potential required by the peripheral. I have a PD to barrel plug that requests 20v, and it's spec'd to handle 100w. Nothing about batteries involved.

Well, there are already a few monitors that can deliver 65 W, enough to power most ultra portable notebooks.

It seems like you're misreading my replies on purpose here. Barrel plugs aren't part of the USB PD spec, there's a reason why it's USB PD, not barrel plug PD...
And so far, USB PD stops at 20V/5A, but your PD spec might be doing something different. Maybe you should be promoting barrel plug PD as the next universal charging standard?

 

[1freedude]

My post #11 was directed at Mr. Taffy, based on his other thread asking about battery powered USB PD. I already knew what he was after.....powering his monitor without another wall plug.

I have had barrel type power supplies that request the correct voltage for years, as well as manual voltage control units. The auto request device was powered by 10v-30v DC or any AC voltage from 100 to 250, 50-65 Hz. That bastard was expensive, but it proved invaluable while traveling around Europe.

I am replying just to add to this thread. Based on my own PD usage, adapters, power supplies, and experience, I am trying to help OP (who, in my opinion is a very knowledgable and crafty SOB) remove 1 cord from his road kit, that's it.

 

[TheLostSwede]

My post #11 was directed at Mr. Taffy, based on his other thread asking about battery powered USB PD. I already knew what he was after.....powering his monitor without another wall plug.

I have had barrel type power supplies that request the correct voltage for years, as well as manual voltage control units. The auto request device was powered by 10v-30v DC or any AC voltage from 100 to 250, 50-65 Hz. That bastard was expensive, but it proved invaluable while traveling around Europe.

I am replying just to add to this thread. Based on my own PD usage, adapters, power supplies, and experience, I am trying to help OP (who, in my opinion is a very knowledgable and crafty SOB) remove 1 cord from his road kit, that's it.

I'm not sure how a barrel plug can be used for requesting anything, since there's simply no underlying technology for requesting Voltage in a barrel plug.
On the other hand, what you seem to be describing is a device with wide range input, which is possible, but not very common, as it adds a lot of cost when it comes to DC powered devices.
Wide range AC devices are pretty common these days on the other hand, but I think you got the frequency wrong there, as only 50 or 60 Hz is being used.

Again, PD = Power Delivery, which is as far as I'm aware, only used in the context of USB PD, nothing else is using that terminology.
The OP is also not understanding the limitations of USB-C, since just having a USB-C port, doesn't equal that a device can be powered through the USB-C interface, which you don't seem to be willing to understand either. This is why I mentioned batteries, since pretty much every single device with a battery and a USB-C port can be powered via USB-C. Most other things, not so much.

 

[1freedude]

I'm not sure how a barrel plug can be used for requesting anything, since there's simply no underlying technology for requesting Voltage in a barrel plug.

Interchangeable tips that have a certain resistance that is read by the adpter. Same physical tip can have different polarity and/or voltage, based on the resistance.

On the other hand, what you seem to be describing is a device with wide range input, which is possible, but not very common, as it adds a lot of cost when it comes to DC powered devices.

I said it was very expensive, but/and invaluable

Wide range AC devices are pretty common these days on the other hand, but I think you got the frequency wrong there, as only 50 or 60 Hz is being used.

Acceptable range 50-65 Hz

Again, PD = Power Delivery, which is as far as I'm aware, only used in the context of USB PD, nothing else is using that terminology.
The OP is also not understanding the limitations of USB-C, since just having a USB-C port, doesn't equal that a device can be powered through the USB-C interface, which you don't seem to be willing to understand either.

Yes, TT did not quite understand PD vs 3.2. I am not sure how you determined I dont know the difference?

This is why I mentioned batteries, since pretty much every single device with a battery and a USB-C port can be powered via USB-C. Most other things, not so much.

And also....my phones can charge/power another usb c device, grant it only requires 5v.

Hopefully it formats correctly...

 

[ThaiTaffy]

Calm down now ppl usb-c pd to barrel is one of my main uses for PD @TheLostSwede yes it's a thing it's just a spoof PD device that outputs to a DC barrel jack. Anyway thanks for everyone's replies.