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Thread: News - New USB standard will deliver up to 100W of power

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    News - New USB standard will deliver up to 100W of power

    Eliminating proprietary, platform-specific chargers.
    Read more.

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    Not a good person scaryjim's Avatar
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    Re: News - New USB standard will deliver up to 100W of power

    So is this going to be done by voltage adjustment or just pumping out more current? I'm really not sure I like the idea of 20A flowing down my USB cable...

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    Re: News - New USB standard will deliver up to 100W of power

    Wouldn't it be 8.3 amps?

    Power (100W) = Voltage (12?) x Current

    100 / 12 = 8.3

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    Re: News - New USB standard will deliver up to 100W of power

    Things are going to get pretty toasty if they're drawing 8.3A.
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    Re: News - New USB standard will deliver up to 100W of power

    Regular USB spec is 5V, not 12v. i.e. 100W at 5v will draw 20A, an insane amount of current for a small cable.

    This new power spec allows the voltage to be increased rather than current to achieve greater power levels, presumably by device request.

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    Re: News - New USB standard will deliver up to 100W of power

    if they get round the technicalities then im very happy/excited , this would make external drives so much easier to use! And alot of other stuff, this is certainly the next step for USB as the speed is already excellent
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    Re: News - New USB standard will deliver up to 100W of power

    Finally, we can make real drinks coolers!

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    Re: News - New USB standard will deliver up to 100W of power

    Did anyone read the article:

    "The new specification will require upgraded electronically detectable “USB Power Delivery certified cables” for the sake of safety"

    "and power draw is “negotiated” so connecting low power requirement peripherals won’t cause them to be fried!"


    So no, your weedy cable isn't going to suddenly get 100W pumped down it and no, unless the device draws more wattage the port won't output at 100W anyway. Hexus needs to condense the whole article to headline apparently
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    Re: News - New USB standard will deliver up to 100W of power

    I wonder if IBM will join in or continue with its own PoweredUSB variant which exists at 5v, 12v and 24v. Their connecters are very good but too bulky for laptop/netbook use and it looks like the Official USB have simply done a mini version to what IBM already have.

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    Re: News - New USB standard will deliver up to 100W of power

    I like this idea, I like it very much - the possibility of being able to power more gear with a single cable rather than data cable + separate power brick is something I'd welcome.

    I'm also wondering if it'd be possible to replace the multiplicity of power bricks with this tech. So you could (theoretically of course) get a USB "power brick" that you could then use to power NAS and broadband modem/router off of one mains socket.
    That would be a welcome move, just like the Micro-USB standardisation within the mobile industry.
    Apart from Apple of course.

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    Re: News - New USB standard will deliver up to 100W of power

    Quote Originally Posted by crossy View Post
    Apart from Apple of course.
    I'm sure they'll patent a thunderbolt version and it will be "magical"
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    Re: News - New USB standard will deliver up to 100W of power

    Quote Originally Posted by DDY View Post
    This new power spec allows the voltage to be increased rather than current to achieve greater power levels, presumably by device request.
    That makes a bit more sense - just ramping up the current flowing through your cables is never a great plan...

    Quote Originally Posted by dangel View Post
    Did anyone read the article:
    ...
    your weedy cable isn't going to suddenly get 100W pumped down it and no, unless the device draws more wattage the port won't output at 100W anyway.
    Yes, of course I read that I was just imagining the size of cables you'd need to carry around if you were going to start pumping 20A into your peripheral items 100W is twice the draw of most laptops

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    Re: News - New USB standard will deliver up to 100W of power

    not neccesary but ok.

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    Does he need a reason? Funkstar's Avatar
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    Re: News - New USB standard will deliver up to 100W of power

    I think this is a fantastic idea!

    I like standard charging cables for portable devices, and now it seems we can have the same power supplies for a lot more besides.

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    Re: News - New USB standard will deliver up to 100W of power

    Quote Originally Posted by Funkstar View Post
    I think this is a fantastic idea!

    I like standard charging cables for portable devices, and now it seems we can have the same power supplies for a lot more besides.
    Couldn't agree more.

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    Re: News - New USB standard will deliver up to 100W of power

    The problem is 1) cheapo cable manufacturers will skimp on materials and use wires too thin for purpose which may melt, maybe even burn 2) people will think their old cables will be suitable to carry such large currents.

    USB Power lines are already supposed to be 20 AWG wire, but most cables I see use the same for power and data AWG 28 (thinner). Have even seen some using less than that!

    This will not end well.

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