The circuit has only one inductor for any number of outputs, one transformer and low sensitivity to transformer volt-second unbalance, only two power switches, and no need for two power switches in cascade. It is suitable for operation from 0 to <100% switch duty ratio (buck-like or boost-like action), accomodating a very wide range of input voltage. A previous paper  gave design equations for operation at duty ratios of 50% or more (boost-like operation). That analysis is extended here to include duty ratios below 50% (buck-like operation). Unusual features of the circuit are described and the most-important design equations are presented.
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
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