Originally Posted by
sin0822
Anyways here we go, higher levels of LLC show different vdroop/vrise depending on voltage. For instance for highest gain at 1.5v and above you want to use level 8 and set a high voltage, Level 9 shows constant no change from idle to load and level 10 shows a droop at voltages of 1.5v and above. Below 1.5v LLC level 10 shows significant rise under load, at some levels like level 7 and level 6 1.23v might show a drop while higher voltages show rise under load. Weird trends, probably how the PWM handles all these levels dynamically. Anyways right here we have great ability for voltage regulation, you can spot them throughout, for instance sometimes like for level 9 at 1.5v i get a rise from idle voltage and then the VRM settles down and i get a nice stead 0.001-0.002 rise over idle. This happens at level 7 and 1.45v, under load it went from 1.480v idle to 1.474v to 1.483 and then to 1.487 and then stuck at 1.487 for the rest of the test, it took about 30 seconds to change the voltages. My nice DMM has a ripple function and the ripple on some of these levels is almost non detectable, you need a scope. Obviously this being an analogue PWM it stabilizes voltage by leaving on the MOSFETs until it hits a voltage and then turns them off and then back on when voltage drops, so its pretty hard to read a steady voltage right off the bat, you need to wait a few seconds for the VRM to settle. But once its settled it is great at keeping at that voltage, of course this is a mix signaled PWM so current is under digital control and votlage is under analogue control, which means current is outputed based on algorithms and voltage is outputted based on error correction, amplification, and compensation. Enjoy the results guys, i changed my previous charts to match this one:
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