Re: this will work??(suggestions please)
correct,,,,, task is mosfet should turn off sharply when ac is not prsent.
let me explain my requirment,,,
when AC present VCC1 will be prsent (from AC-DC converter which i mention as
DC source.)this VCC1 is the source for the battery charger and DC-DC converter
(which is connected to VCC)whether AC is present or not DC-DC converter should
be ON.,,,,,,,,
when AC-DC ON it will feed power to the dc- dc converter and charger,,,,,
when AC is absent battery should feed the power to the DC-DC converter,,,
here my requirment is when AC is absent i want to isolate AC/DC from battery
(from VCC) I can achieve this with out mosfet it self ,,,,,,, i can use a diode
instead of MOSFET refer circuit 1........ but loss will be more (compare to MOSFET)
since i want to achieve much higher efficiency i want to replace the diode with a
MOSFET ,,,,,, so think in that way ....,,,,, better ideas and suggestions will be really
appreciated
kamal