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Author Topic: Motherboard with USB 3.0 mobile phone fast charge and special notes  (Read 234 times)

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Offline Kiriakos GR

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This period of time I am up to upgrade the motherboard and CPU of my PC.
The new motherboard supports USB 3.0 mobile phone fast charge.

USB 3.0 mobile phone fast charge of (2014) this is designed to handle 1.9A charging current, 3A this is the absolute max.

In theory and according to specifications, the appropriate cable code this is:
E301195 AWM STYLE 2725 80ºC 30V VW-1 SUPER HIGH SPEED Revision 3.0

Modern mobile phones with requirements for faster fast charge (over 2A), these using cables named as High Speed Revision 3.1

The difference of 3.0 and 3.1 this has to do with the diameter of the pair of wires this be responsible for the DC supply.

Much older Fire-wire cables come with cable specification:
HIGH Speed HDMI Cable, E119932-U AWM, Style 20276, 80°C, 30V, VW-1
Such cable has the thinnest pair of wires for DC supply, especially if they are very old production.

Most motherboards which come with USB 3.0 mobile phone fast charge, they were include an 3.5”  ( Floppy bay dimensions ) front panel, this including 2x USB 3.0 ports along 19pin connector for connection over the motherboard.

I got a used motherboard, the original Gigabyte USB 3.0 front panel this is missing.
Then started my research of getting a new OEM identical panel, (Gigabyte part number 12CR1-FPX582-21R ).
I did buy two of them from stock which I discover in Germany and they are now on the way to Greece.

By looking stock pictures of this OEM USB 3.0 front panel, I discovered a scam in some occasions.
A few no-name factory they did use Fire-wire cable than the appropriate E301195 AWM STYLE 2725 (HIGH SPEED Revision 3.0).

Fire-wire cable this has thinnest DC supply pair of wires than USB 3.0

USB 3.0 was born to deliver enough electrical power to external devices, starting from mobile hard drives, and up to mobile phone charging.
These tasks require 900mA DC supply.

Lossless cable for the DC supply alone, this is considered anything using AWG 22 that you may find such specification at branded cables only which them carry also the description of Highest quality cables.
 
To me as an electrician, right now it has born a new question, and this is what electrical test setup it is required, so to benchmark and or to measure, true DC supply potentials of USB 3.0 cables (extensions).   

Another second way to get scammed, this is cable type:
E301195 UL AWM STYLE 20276 80°C 30V VW-1 SUPER HIGH SPEED USB Revision 3.0
Cable this is originally intended for Display port connections 32 AWG.
 
 
Now let’s summarize, oldest USB 2.0 standard this designed to deliver 500mA as max load at DC supply of 5V.
This can be served by thinnest wire down to 28AWG.

For USB 3.0 (powering external devices) we need better than that, thickest that I found at extreme quality cables this is at 22AWG.

Let’s talk metrics, 22AWG= 0.64mm (Best USB 3.0)   28AWG=0.32mm (Regular USB 2.0) 
32 AWG=0.20mm (Fire-wire & Display port or HDMI cable).

If you ever buy an USB 3.0 front panel, or USB 3.0 extension, now you are able to detect if you were scammed or not.


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Offline Kiriakos GR

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NEC Renesas (Japan) uPD720210 USB3.0 Dual Hub with embedded charge controller
« Reply #1 on: February 01, 2022, 12:08:29 PM »
Gigabyte motherboards manufacturer it did select to use uPD720210 at several medium to high end motherboards.

NEC Renesas (Japan) uPD720210 it is combination of three electronic circuits within a single package.
Two USB3.0 HUB of four ports its one, with independent USB 3.0 inputs.
uPD720210:  it’s one input of HUB-A along HUB-B, they get bandwidth directly from INTEL Chipset due two dedicated channels.
 

The μPD720210 is a USB 3.0 hub controller that complies with the Universal Serial Bus (USB) Specification Revision 3.0 and operates at up to 5 Gbps.
The device incorporates Renesas’ market proven design expertise in USB 3.0 interface technologies and market proven USB 2.0 hub core.
The device is fully compatible with all prior versions of USB spec and 100 % compatible with Renesas’ industry standard USB 3.0 host controller.
It comes in a small 76-pin QFN package and integrates several commonly required external components, making it ideally suited for applications with limited PCB space.
In addition, μPD720210 incorporates Renesas’ low-power technologies and supports all mainstream battery charging specifications.

The USB 3.0 interface can transfer up to 5 Gbps, but normal sustained transfer speeds on a good USB3.0 external hard drive is typically around 100MB/s and over 400MB/s for SSD.

All USB HUB they do sharing of the incoming bandwidth, in the very rare event that all four ports are busy with file transfers then its port bandwidth this will become no lower than 1.2 Gbps.

Renesas 720210 this also include a smart made, mobile phone Fast charge control circuit, this can serving all HUB ports.
Actual feature implementation (number of Fast charge ports active) a choice of the motherboard manufacturer. 
Supports USB Battery Charging Specification Revision 1.2 and other portable devices
-
DCP mode of BC 1.2
-
CDP mode of BC 1.2
-
China Mobile Phone Chargers
-
EU Mobile Phone Chargers
-
Apple iOS devices
-
Other major portable devices

Latest update to Renesas 720210 product documentation was made at 2018.
Pictured bellow the important part of a very long document = USB Battery Charging Specification Revision 1.2
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Offline Kiriakos GR

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Re: Motherboard with USB 3.0 mobile phone fast charge and special notes
« Reply #2 on: February 26, 2022, 09:44:13 AM »
Read of Renesas specifications this is one thing.
What performance you actually get this is something different.

In summary, at universal charging protocols (Samsung Galaxy of 2015) Renesas charger will deliver 1A as max.

History recorded ASUS and Gigabyte be both the ones using Renesas charging technology as a marketing point.
But both did use tiny fonts about the platform that benefits the most, and this is Apple and IOS devices.

Universal charging protocol this is supported by a much higher number of mobile devices.
Renesas charging technology will aloud 1000mA to them as charging current, and this translates that many more charging cables them not complying to Fast Charge 1.9A, they can be used instead.
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