***[Official]***Z77X-UP5/ UP4/ D3H-TH Owners Club, Discussion, and Info Thread - Page 3

yea all the boards makers are now using vrd12.5 certified as that is what haswell and Ivy-E will require. To be honest VRD12.5 isn't actually impressive, it is actually less demanding lol...

Um there is no datasheet on the IR3563A, however there is just this one press release:
http://www.irf.com/whats-new/nr120207.html

We also se the IR3567 being used on Z77X-UD5H and most other GB boards, however there is still no datasheet on that IC.

Chances are just like CHL never released datasheet(all you can get is a product brief) then same thing will apply here.

But yes there was a PWm called the CHL3818 which i think is 8+0 as well.

All ASUS Z77 should use IR or CHL, well they have to to maintain those BIOS settings. The fact that max switching frequency for VCore on CPU is 500khz I keep seeing, to mean means they are doubling their 8 phase boards like the Z77 sabertooth and M5G, just like they did with Z68, however they could use either a IR3567 to do that, but they might still be using the CHL3828 as they still have 16 phase boards that would require it, and that PWm is one of a kind it is 7+1 phases, however it can also do 8+0 mode, but the IR PWms cannot, and CHL is not making any new PWMs, only IR will.

IR re-brand of CHL still isn't just a re-brand, they do some things very different, just minor things internally for current and voltage conversion to digital formats, otherwise same things apply. But no if you have a VRD12.5 certified PWM, it has to be different than any CHL PWM. Also the IR3563A is just 8+0.

the 7030Al is 68A@25C@62.5W lol that 62.5W is what you overlooked as that is the power that needs to be dissipated!!!!
the IR3550 is 60A@25X@11W lol that is a huge difference, 6x IR3550 can basically output the same amount of heat as one 7030AL at 60A, however they will also output 6x more current.

Anyways here is something on the new UP5 boards:
http://www.muycomputer.com/2012/07/25/record-mundial-de-overclock-core-i5-3570k-nada-menos-que-69-ghz


ASUS will start using IR3550, IR said they would be.

Now 7030Al is the high-side FET on most ASUS boards, it is a very good MOSFET, at 10W it is about 27A output at 25C which is possible as they use good heatsinks. But it is still overkill for Ivy Bridge, Ivy Bridge uses no power.

About the PWM all you have to know is that it is most likely some 8 phase PWM on the ASUS boards, however that might actually be an IR3567 as ASUS is using smaller ICs which are phase doublers which are IR3598, same as GB uses on UD5H and UD3H, however just like on the UD3H the phases do not have to be doubled, as the IR3598 can also be a dual driver and not a doubler i you feed it 2x PWM input channels.

DrMOS don't compare, for instance a 50A DrMOS from vishay which is a great company, does 35A at 90%efficiency, the IR3550 does 50A at 90% efficiency lol.

Download the datasheet for the IR3550, look at the graph on the first page. Then download the datasheet for the 7030AL., you need need a calculator on page 3, figure 1 and figure 2 are both graphs. Notice that in figure 1 Ider% is actually calculated using that 68A figure. So basically the y axis is true current/(68A) *100= that number. However then you need to use the second graph as well which is the true power/(62.5W)*100 for its Y axis. What you want is to the bring the power dissipation rating down into an area which is normal or comparable to the IR3550. So let's so 10W. So 10/62.5*100=16, so take p% der and find where 16 goes, which is about 130C. Then take 130C and find what %Ider on figure 1 graph it goes too, which is:about 40, so divide 40/100*68=27.2A true output at the same power dissipation as the IR3550, 10W.

FYI 7030AL are very good MOSFETs, however just like all MOSFETs cooling is an issue.

Also yes all the ASUS 16 phase boards will use 8 phase PWM and then it will be doubled through IR3598. On the Maximus 5 Gene they have 4 phases doubled so they can use the other outputs. I however believe that the Maixmus 5 Extreme uses 8 true phases. Thus I think they are using two different PWMs. Most likely a straight 8 phase as well as a 6+2 phase PWM. The issue with ASUS is that they re-brand, however if I had all the board i could find out exactly what is going on, there are some things that can give it away.

Anyways the UP7 uses IR3564A and it uses 8x IR3599 which are phase quadrouplers(you wont find any info on this IC), they take 1 input from the PWM and output 4 PWM outputs.
Now it is a bit different than other PWm doublers in that it doesn't turn on all the phases at the same time, instead it only engages 1 of its PWm outputs per cycle on each quadroupler. Meaning the end result is four 8 phase VRMs lol. So it basically runs super cool. It also has the ability to turn all 32 phases on at the same time.

for now yes the Up5 has the best VRM IMO every made in history on a motherboard. There have been some sick ass GPUs. Before the UP5 the Maximus 4 Extreme and the EVGA X58 Classfied and the X58A-OC IMO had the best VRMs, with the classified IMO a bit better than the others, however now the UP5 is better than all of them. The only thing that could be better is a proadlizer capacitor, however there are major shortages in Japan of these caps. But for now OS-CON Sanyo brand capacitors with ultra low ESR, from what i have been told actually have better ESR than the POSCAps they use.

have you tried the x32 version? I will try now.
Edited by Sin0822 - 7/26/12 at 8:40pm