For someone trying to learn about FETs, it seems there is no consistency in terminology (unless I am reading things wrong.)
I am trying to understand the FET as a switch (for power applications.) It has become clear that you want to operate a switch in the ohmic region. To get to the ohmic region you would need to go from cut off -> saturation -> ohmic region.
TI refers to it like this in an app note:
From this I implied that the 'linear' region is in fact rather confusingly the saturation region of the FET as shown all across the web for a FET curve:
However, when I went to wikipedia I came across the following image:
This is saying the exact opposite of what I understood which is saying that the ohmic region is the linear region.
Infineon has an app note around FET switching, titled Linear Mode Operation
They refer to the linear mode as the saturation region as shown from this:
So what is it then?
Also just to be clear: Is the reason we want to minimise time in the saturation region with an FET because here we have a VDS and an ID current flowing through the FET, whilst as soon as the FEY reaches linear region, it's VDS would fall close to 0 and hence minimise losses?
When we say the FET is saturated, it means for a given Vgs, Vds makes no difference to drain current (because channel can't let more electrons to flow?) Shouldn't the ohmic region be called saturated? Since increasing VGS makes no difference to drain current as the ID is now limited by the circuit and not the FET?
Edit: Answers in electronic stack exchange say it is the saturation region: