Guy's,
I am wandering how you are able to get such higher rates? I am not hardware expert but according to my knowledge the TPS DC/DC converter can handle up to 20 Amps. At clocks higher that 400 maybe chip consumes 3-4A at 1.3V so 10 Chips *4A=40 Amps. Double the capacity that TPS DC/DC can handle.
I would be more than happy if someone comments it
Thanks
There are really only 2 areas where a switching VR can fail. Heat and inductor saturation. If the FET cant handle the current the friction of the electrons traveling through the junction turns to heat. The heat will eventually kill the part. If you keep things cool (im watercooling) you can go amazingly far past design tolerances.
I dont know what the inductor saturation point is. I havent looked up the spec. I can say that I can hold my finger directly on the inductor and it dosnt burn me. Its not comfortable, probably about 45-50c temp.
As far as killing my Avalon goes... I dont care. I need to get as much out of this thing in the next 30 days... after that it probably wont be profitable to run.
TPS chip are designed to handling 20A but in reality all depends how much can drive MOSFET. If FET can switch more amps and have internal resistance and capacity below the level to which it has been TPS chip designed for we are safe.
It is more important to eliminate bottlenecks like resistance of the transistor and the current paths. That's unnecessarily generate additional heat.