Originally Posted by Valnjes
I see it as this: if You program it digital - it works digital.
For comparing to this.
If You have an hybrid TV tuner in Your PC, and You use it only for digital signal, You cant say "It is not digital" because it is.
OK, Its hybrid, it has booth of the worlds, so it don't make that product worse, it can just be better.
No dude you do not understand. lol first of all all PWMs are programmed, usually at the factory, however Digital PWMs have NVM(non volatile memory) so that they can be reprogrammed if needed by the manufacturer. That is how GIGABYTE was able to solve the issue with the X79-UD3, that is not possible with these intersil PWMs(Inclusing ISL6367).
Please man either goto college and become an EE like I am doing, or just believe marketing from a company who lies. Also what about the ASRock Pro3?
It says Digi Power, OH BTW IT USES AN STMicro PWM!!!! LOL that can never be considered digital, please email ASRock about that!
Also PMBus is a power management bus, it is required for CPUs with high TDPs(130W+), google on that chinese wite, wakibui or whatever it is called, VRD12 and it will be listed. It is REQUIRED for Ivy Bridge-E(130W+) and thus that is why it has to be added for VRD12.5.
PMBus has been around for a very long time, it doesn't mean anything.
Also let me put it this way, beucase you clearly do not understand analog and digital differences, digital refers to 1s and 0s, basically binary code, inside a digital PWM you have a processor which uses a PID algorithm to determine load transients, you don't see any PID in any Intersil PWM used. or any type of processing just straight error comparison and then a saw-tooth waveform is used, and that can be altered by different external busses to compare against. That isn't the same as a real processor with memory which can be programmed through a BIOS updated and which can automatically think for itself.
Also look at your Z77 ASRock boards, do you see any of the options for PWm control you see in modern ASUS and GIGABYTe boards? i am talking about a full page worth of OVP, OCP, OTP(this one is key), phase speed control, phase temperature ver current modes, and complex LLC? How about switching frequency in fine increments like 50khz?
ASRock is lieing, they are not based in the USA, and thus don't give a damn about US regulations. So they can lie through their front teeth, like asrock thinks they make it so that their boards turn on for 1 minute every hour that it can be considered a dehumidifier tech. LOL
Intersil ISL6366 and ISL6367 can both be considered hybrid digital PWMs.
The huge difference between analog and digital is the fact that the error loop is able to give the PWm the information to figure out how long to keep each phase on as well as the duty cycle and other characteristics so that it can go and turn on stuff for that period of time.
An analog PWM will increase and decrease the duty cycle once the error goes out of the range it wishes, however a digital PWM will figure out exactly how long to move the duty cycle so that it wont overshoot or undershoot and so that it can be more precise. Also voltage setting was more accurate but Intersil was finally able to get ISl6366 down to 5mv as that is VRD12 standard.
Intersil ISl6367 is just another analog PWM which has been pushed far and been given the ability to use the digital buses which the new VRD specs require. Just like ISl6366 was. There becomes a point where they can just switch.
If what you say is true, then why doesn't Intersil call their PWm a digital PWM? Because it isn't digital man.
I am sorry man, i don't mean to offend you but ASRock lies a lot. I feel like actually filing a class action lawsuit. Can I ask how do you think they controlled their PWms in the past? They have always used DVID or SVID, and those two are digital busses. You can see they are converted to analog by a DAC as soon as they enter the PWm as well. Same for PMBus i bet you and that is why Intersil wont share a block diagram let alone a datasheet.Edited by Sin0822 - 8/9/12 at 7:13pm