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TI Home » TI E2E Community » Support Forums » Power Management » AC/DC and Isolated DC/DC Power » AC/DC and Isolated DC/DC Power Forum » UC 3854
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UC 3854

This question is not answered
rakesh ramachandran
Posted by rakesh ramachandran
on Aug 07 2012 00:09 AM
Prodigy100 points

Hello ,

i am using uc3854bn for my circuit  with a load of 25kw for making 700v bus using 3 phase supply. but when no load is connected vsense of above 3v also the voltage is not regulating what may be the reason, plz help . any one have worked please help

 

regards

 

rakesh 

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  • John Bottrill
    Posted by John Bottrill
    on Aug 07 2012 09:50 AM
    Mastermind25130 points

    Rakesh,

    If the sensed voltage is above 3 volts the unit thinks the output is in an overvoltage conditions and should be shut down.

    John

    John Bottrill

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  • rakesh ramachandran
    Posted by rakesh ramachandran
    on Aug 07 2012 22:29 PM
    Prodigy100 points

    John,

    The system is not shutting down at no load what may be the reason?

    rakesh

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