A New Multiple-Output Hybrid Power Supply

A new hybrid power supply is presented to perform the precise regulation of multiple output voltages, which is composed of the improved forward type multiple-output converter as a preregulator and the continuous series regulators using MOS FET as voltage dropper. The steady-state and the dynamic cross regulation characteristics are analyzed and compared theoretically and experimentally on the conventional and improved forward type multiple-output converters. As a result, it is clarified that the improved forward type multiple-output converter is superior to the conventional one in the steady-state and dynamic cross regulation characteristics, and that the proposed multiple-output hybrid power supply has a sufficiently precise regulation characteristics of the multiple output voltages and a satisfactorily high power efficiency.