Design Considerations for Dual-Output Quasi-Resonant Flyback LED Driver With Current-Sharing Transformer

Abstract

In this paper, a quasi-resonant (QR) flyback dual-output LED driver with current-sharing transformer (CST) is analyzed thoroughly. Although the CST is utilized to balance the currents in two LED strings, from the theoretical analysis, it shows that the parasitic capacitance of CST and its magnetizing inductance have a significant effect on the output… (More)

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