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Supported USB-A/USB-C Port Power Standards (tested)

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mikeonline

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Here we go with the poor support of the USB Power standards.​

We have DCP 5V 1.5A and CDP. Both are nearly the same, except that the Middle-Box USB Connectors have a Data-Connection to the Car-Display.
The Connectors in the fond just provide power. [1] [2]
As we have 5V * 1.5A = 7,5 W which is very poor (created around 2007-2010). State of the Art is up to 240 W.
I dont demand we get latest USB Power Delivery Standards, but at least for USB-C connectors, we could expect much more.
About the Test-Results for the USB-C Port, i have to do some more tests, as the used test device runs into an endless loop.

Fond USB-A:​

Fond USB-A

​

Some modern USB-C Power-Supply as Reference-Class (green means it is supported, red is unsupported):​

A much better modern powersupply


Sources
[1] BC1.2 SDP/CDP/DCP Explained
[2] USB Battery Charging 1.2 Compliance Plan rev 1.0
 
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marcusnilsson

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Does this mean the factory standard usb ports deliver poor performance?

I have installed 12V sockets to Int 1 and Int 2, and will place a 130W usb-c/a adapter there. Will give me 1 100W USB-C port and one 30W usb-c OR 30W usb-a.

Not sure what I need all that power for as my iPhone maxes out fast charging at 30W.

As Clarkson says: MOOOORE POOOOWEEEER !
 
Stu_Barnes

Stu_Barnes

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I know that if you overload the USB charging then you have to unplug everything before it resets. You get a warning dialogue on the infotainment screen.

2 iPads, an iPhone and a brick Mophie were too much for poor old Grenny.
 
Jeffrey

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1100 watts USB-C? You're kidding, right? I think the wires would melt. The biggest draw I can think of for me is charging three Mavic 3 drone batteries at once or my MacBook Pro. One 100 watt port is quite adequate for that. What are you doing, cooking steaks?
 
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Jeffrey said:
1100 watts USB-C? You're kidding, right? I think the wires would melt. The biggest draw I can think of for me is charging three Mavic 3 drone batteries at once or my MacBook Pro. One 100 watt port is quite adequate for that. What are you doing, cooking steaks?
Click to expand...
Re read that... 1 100w :ROFLMAO:
 
angstorms

angstorms

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USB-C If you want to geek out on USB-C and USB x.x power good document from TI, https://www.ti.com/lit/wp/slyy109b/...32040&ref_url=https%3A%2F%2Fwww.google.com%2F

Note 100 watts is normal for PD 3.0 spec. We just need to understand what USB device spec is being supported. You can see 1.2 spec USB-C is only 15 watts.

So no we not being screwed, what he showing are vendor specific extensions, aka Apple, Samsung, etc

Screenshot 2024-03-05 at 5.58.01 PM.png



Now there is newer spec USB PD 3.1, but you need to increase the voltage to hit higher power. from the USB Spec site. https://www.usb.org/usb-charger-pd
Note I work in Semi business.

USB Power Delivery offers the following features:​

  • Increased power levels from existing USB standardsup to 240W.
    • New 28V, 36V, and 48V fixed voltages enable up to 140W, 180W and 240W power levels, respectively.
    • An adjustable voltage supply mode allows the device being powered an ability to request intermediate voltages between 15V and up to the maximum available fixed voltage of the charger.
  • Power direction is no longer fixed. This enables the product with the power (Host or Peripheral) to provide the power.
 
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marcusnilsson

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Jeffrey said:
1100 watts USB-C? You're kidding, right? I think the wires would melt. The biggest draw I can think of for me is charging three Mavic 3 drone batteries at once or my MacBook Pro. One 100 watt port is quite adequate for that. What are you doing, cooking steaks?
Click to expand...

1 x 100 W 😝
 
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