3.DC input voltages (a voltage doubler is used for 110VAC)
a.From 110VAC:V
in(low)
=2(1.414)(90VAC) =254VDC
V
in(hi)
=2(1.414)(130VAC) =368VDC
b.From 220VAC:V
in(low)
=1.414(185VAC) =262VDC
V
in(hi)
=1.414(270VAC) =382VDC
4.Average input currents (dc)
a.Highest average:I
in(max)
=350W/254VDC =1.38A
b.Lowest average:I
in(min)
=350W/382VDC =0.92A
5.Estimated maximum peak currentI
pk
=2.8(280W)/254VDC =3.1A
Design decisions
This is going to be a current-mode controlled half-bridge topology. ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.