PROJECT TITLE :
An Input-Series Flyback Auxiliary Power Supply Scheme Based on Transformer-Integration for High-Input Voltage Applications
An input-series flyback auxiliary power provide theme is proposed and investigated, that is suitable for the high-input-voltage multiple-output low-power applications. During this power offer, a common integrated-transformer is adopted, all of the series-modules are operating synchronously, and the active input voltage sharing (IVS) will be achieved efficiently while not any special controller. The active IVS mechanism of the proposed scheme is analyzed well. Furthermore, style issues of the common integrated-transformer and the input filter capacitor of every series-module are discussed, moreover because the influence analysis when the series-modules are operating asynchronously. Finally, a sixty-W laboratory-created prototype of the auxiliary power provide composed of three flyback series-modules is made, and the feasibility of the proposed scheme and also the validity of the theoretical analysis are verified by the experimental results.
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