On Jun 18, 2007, at 11:12 AM, Randall Nortman wrote: > I am > over-designing the power supply to provide at least 1.5A at 70C. I > will > take an efficiency hit by over-designing that much, but I don't think > I'd feel comfortable with less margin.
Maybe not. My experience with switchers is that a design optimized for efficiency will have big components to minimize I^2R losses. Gate drive on a big transistor costs some power, but usually not enough to dominate unless the transistor is grossly overrated. Thus, the efficiency optimized design will have a lot of headroom. John Doty Noqsi Aerospace, Ltd. http://www.noqsi.com/ [EMAIL PROTECTED] _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
