jellochaos Posted January 15, 2011 Report Share Posted January 15, 2011 I was searching for a way to design a simple synchronous rectifier with N-ch mosfets, to avoid the voltage drop of a diode bridge. I found some interesting ideas, a little expensive though.Now I found this "ideal diode" from Linear.http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1079,P85544It is similar to the way a synchronous rectifier works, it has a circuit that controls a mosfet's gate.It also seems like the simplest way of making an active rectifier!But I also wonder why they don't mention that in the datasheet.Would it be possible to use 4 of those ideal diodes as a bridge rectifier with low losses? Quote Link to comment Share on other sites More sharing options...
Hero999 Posted January 16, 2011 Report Share Posted January 16, 2011 You can't build a diode bridge from these because they don't have negative devices, only positive. Quote Link to comment Share on other sites More sharing options...
Kevin Weddle Posted January 16, 2011 Report Share Posted January 16, 2011 You could use these devices for a bridge rectifier or full-wave rectifier if they have P channel and N channel MOSFET's. However they might not be as accurate since the output of a full-wave rectifier is not regulated. These MOSFET diodes regulate Vds in response to a change in current. Quote Link to comment Share on other sites More sharing options...
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