> I am going to get flak for this but afaik for low voltage supplies
when a
> charge pump is not available, low saturation bipolar bridges are
cheaper
> and perform better than homebuilt VFET ones. The reason is that the
FETs
> can't be opened properly with 4.0..8.4V usually available in models.
> (Exception taken for logic level FETs which can).

I spoke to an IRF engineer a couple of weeks ago, discussing low
mosfet gatedrive voltages. This engineer told me that their lastest
generation non-logic level mosfets, which includes for example the
IRF3205, are fully enhanced at a gate voltage of >6V. This means that
full mosfet performance can be expected with this drive voltage. I did
need this information for an application of mine, were gate voltages
as low as 8V are possible.

Daniel...

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