Research on Input-Series and Output-Parallel DC/DC Transformer
The input-series and output-parallel (ISOP) converters, which consist of multiple low-voltage and low-power modules, are very attractive in the high input voltage. In this paper, an ISOP DC/DC transformer, based on non-resonant full-bridge DC transformer modules, is proposed. The main factors, which influence the input voltage sharing, such as duty cycles, switching frequencies and periods, and turn ratios in each module, are analyzed in detail for guiding designing an ISOP DC/DC transformer in practical applications. Finally, experimental results of an ISOP DC/DC transformer are given to verify the analysis.
KeywordsDC transformer Input-series output-parallel Voltage sharing Full-bridge converter
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