The subject invention reveals new three terminal tapped inductor canonical
cells for non-isolated power conversion. The canonical cells achieve
reduced semiconductor component stresses for applications with limited
line voltage range for small step up and step down ratios or for large
step up and step down ratios. Some of the canonical cells can be used to
form buck, boost, and buck boost converters. Another of the canonical
cells is a member of the SEPIC family which can both step up and step
down or operate in all four quadrants. Related canonical cells which
achieve zero voltage switching and improved electromagnetic compatibility
are also revealed. A new more robust floating gate drive control circuit
is revealed which operates without magnetic components, without optical
coupling, and without high voltage semiconductors is revealed.