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  1. #1
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    Default LLC

    LLC seems somewhat recent; why is that? The idea didn't exist till recently or the necessary technology? Or perhaps there was little motivation till the drive for efficiency.

    This document mentions it being discussed 3 decades ago https://www.microsemi.com/document-p...reat-advantage

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    Quote Originally Posted by ashiekh View Post
    LLC seems somewhat recent; why is that? The idea didn't exist till recently or the necessary technology? Or perhaps there was little motivation till the drive for efficiency.

    This document mentions it being discussed 3 decades ago https://www.microsemi.com/document-p...reat-advantage
    It was always available, but without efficiency requirements, never really necessary.

    When I first used it in 2007, it was the only desktop PSU to have it. And I could only get the (very expensive) NXP controller in any kind of volume. When that volume dried up when I was ready to "revamp" the product, essentially doubling our forecast (as we weren't discontinuing the previous, just adding another model), I found out the lead time on the NXP controller was very long!

    Now-a-days, more companies are making LLC controllers and they're much cheaper. Champion, Infineon.. they're all making LLC controllers among others.

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    Quote Originally Posted by ashiekh View Post
    LLC seems somewhat recent; why is that? The idea didn't exist till recently or the necessary technology? Or perhaps there was little motivation till the drive for efficiency.

    This document mentions it being discussed 3 decades ago https://www.microsemi.com/document-p...reat-advantage
    Later Versions of the Playstation 3 had an LLC-Resonant mode PSU or what looked like it.

    The Reasons are the usual:
    a) cost
    b) no need
    c) proven alternatives

    Another Problem with LLC is that its a single voltage converter, Double Forward can be a multi Voltage Converter (ie: one Voltage in, multiple come out).
    So for a PC you need something to convert 12V to 3,3V and 5V, you need Controllers to control that.
    And that might just not have been there...

    The NMB WTX PSU I have from the early 2000s for example use a PIC16 and some weird stuff...
    Sadly I don't have access to some pix of that...
    That might have been/could be an LLC Resonant mode PSU...

    So they were just not that common at the time because you didn't need the advantages of an LLC Resonant converter.

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    I assume any patents have expired

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    Quote Originally Posted by ashiekh View Post
    I assume any patents have expired
    FRAND???

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    try to go like reallll low maybe like 11.4v man...and this massive 10v cap.
    Ryzen 2600x 4.3 1.375v, Loop
    MSI X470 Gaming Plus
    Evga SuperSC 3200mhz CL15
    PNY NVME 480gb
    Reference Vega 56
    WD Blue 1tb
    Cooler Master GX II Pro 750w

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