The double converter: A fully regulated two-output dc-to-dc converter

A new type of two-output dc-to-dc converter is proposed. With this “double converter”, two completely regulated outputs can be obtained using only one switching element and very often without a transformer. The operating principle is based on the discontinuous-conduction mode operation of one output and the continuous-conduction mode operation of the other output. Both outputs are sensed and the duty-cycle of the switching element and the frequency are controlled. A prototype has been built and the results obtained are discussed.