AVR-Chat

David VanHorn wrote:
> On Fri, Apr 10, 2009 at 11:29 AM, Robert Adsett
> <subscriptions@aeolusdevelopment.com> wrote:
>> Graham Davies wrote:
>>  > the diode, present in many MOSFETs from drain to source,
>>
>> The diode is inevitable in the MOSFET structure isn't it?  It can be
>> optimized for a particular application but not eliminated.
> 
> There are specialized fets called BatFets that don't have the diode.

Do you have a reference?  I've not heard of a BATFET and the only 
reference's I was able to find were TI and Linear datasheets where they 
labelled regular mosfets as BAT FET  based on its circuit location I 
believe.

>> In fact I use MOSFET's as diodes in certain applications since they are
>> nice inexpensive power diodes.
> 
> I have a fun bridge rectifier circuit using mosfets that's giving me headaches.
> It works on the bench, but I can't get it to sim in spice.

Maybe you need to simplify the model and get rid of the FET portion.

Robert

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