New article: Power Delivery in a Modern Processor

Article: Power Delivery in a Modern Processor
By: David Kanter (dkanter.delete@this.realworldtech.com), June 1, 2020 7:52 am
Room: Moderated Discussions
Paul (pave.delete@this.noa-labs.com) on May 31, 2020 11:08 pm wrote:
> David Kanter (dkanter.delete@this.realworldtech.com) on May 11, 2020 7:37 am wrote:
> > Friends, posters, and lurkers,
> >
> > Power delivery is one of the most significant challenges in modern processors. The power
> > delivery network (PDN) must meet the demanding requirements of modern CMOS technology,
> > supply power with excellent efficiency, and swiftly respond to changes in power draw.
> >
> > I just published a new post that goes into detail on power
> > delivery: https://www.realworldtech.com/power-delivery/
> >
> > It includes a brief discussion of system level power delivery, Intel's FIVR, and decoupling capacitors.
> >
> > As always, please take a look and comments/feedback/questions welcome here!
> >
> > David
> >
>
> Hello,
>
> I wonder, as the voltages seem to be set to drop by at least 0.1-0.2 volts before copper losses will start
> becoming hard blockers,

Copper losses where?

> is FIVR, or another on package/on chip switching DC-DC a must to continue scaling?

It's not mandatory, but as my article illustrates it's a lot easier if you can use a higher voltage and convert close to the point of load.

> What do you people think of Vicor transformators that Nvidia uses on high end cards?

I didn't talk about specific VR architectures, because there's a huge amount of complexity there and it's a very interesting design space. I kept things simple and focused on the system.

But generally 48V regulation close to point of load seems good for those folks who want 48V.

David
< Previous Post in ThreadNext Post in Thread >
TopicPosted ByDate
New article: Power Delivery in a Modern ProcessorDavid Kanter2020/05/11 07:37 AM
  New article: Power Delivery in a Modern ProcessorMaynard Handley2020/05/11 10:03 AM
    Buried power rails, super vias, etc.David Kanter2020/05/11 11:44 AM
      Buried power rails, super vias, etc.Maynard Handley2020/05/11 06:06 PM
  InductorsMoritz2020/05/11 12:01 PM
    InductorsDavid Kanter2020/05/11 12:36 PM
  New article: Power Delivery in a Modern ProcessorTravis Downs2020/05/12 07:53 AM
    New article: Power Delivery in a Modern ProcessorJason Creighton2020/05/12 09:15 AM
      New article: Power Delivery in a Modern ProcessorDan Fay2020/05/12 09:35 AM
        New article: Power Delivery in a Modern ProcessorJason Creighton2020/05/13 09:09 AM
          New article: Power Delivery in a Modern ProcessorRicardo B2020/05/13 11:47 PM
            New article: Power Delivery in a Modern ProcessorMichael S2020/05/14 12:29 PM
              New article: Power Delivery in a Modern Processoranon³2020/05/14 05:22 PM
              New article: Power Delivery in a Modern ProcessorRicardo B2020/05/15 05:06 AM
                New article: Power Delivery in a Modern ProcessorMichael S2020/05/15 05:13 AM
      New article: Power Delivery in a Modern ProcessorTravis Downs2020/05/13 03:01 PM
    LDO power savingDavid Kanter2020/05/12 10:16 AM
      LDO power savingYoav2020/05/13 03:56 AM
        LDO power savingTravis Downs2020/05/13 06:44 AM
          LDO power savingDan Fay2020/05/13 07:03 AM
            LDO power savingTravis Downs2020/05/13 03:02 PM
              LDO power savingRicardo B2020/05/14 12:08 AM
    Asynchronous CPU?dmcq2020/05/12 01:05 PM
      Hindered by device testing and design validationPaul A. Clayton2020/05/12 02:13 PM
        Hindered by device testing and design validationMark Roulo2020/05/13 08:22 AM
          Hindered by device testing and design validationAnon32020/05/14 07:06 AM
  Work scheduling for moderating powerPaul A. Clayton2020/05/12 10:15 AM
    Work scheduling for moderating powerDavid Kanter2020/05/12 10:40 AM
      Work scheduling for moderating powerPaul A. Clayton2020/05/14 09:27 AM
    Work scheduling for moderating powerTravis Downs2020/05/12 01:25 PM
      That is certain one real world example (NT)Paul A. Clayton2020/05/14 09:28 AM
  New article: Power Delivery in a Modern ProcessorDanjel McGougan2020/05/13 06:52 AM
    New article: Power Delivery in a Modern ProcessorTravis Downs2020/05/13 03:07 PM
      New article: Power Delivery in a Modern ProcessorRob Thorpe2020/05/15 06:36 PM
        New article: Power Delivery in a Modern ProcessorRicardo B2020/05/15 10:31 PM
  Bypassing capacitors & testingRob Thorpe2020/05/15 06:54 PM
  New article: Power Delivery in a Modern ProcessorRicardo B2020/05/15 10:22 PM
    New article: Power Delivery in a Modern ProcessorDavid Kanter2020/05/16 09:03 AM
  New article: Power Delivery in a Modern ProcessorPaul2020/05/31 11:08 PM
    New article: Power Delivery in a Modern ProcessorDavid Kanter2020/06/01 07:52 AM
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