DC bias analysis and small-signal characteristic of active-clamp forward-flyback DC-DC converter with a current doubler rectifier

Wen, Yangyang; Miao, Hong; Batarseh, Issa

doi:10.1109/apec.2005.1453237

Cited by 8 publications

(1 citation statement)

References 5 publications

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“…However, the conversion efficiency of the converter cannot be improved significantly. The isolated active-clamp forward converter (ACFC) had been proposed to reduce the voltage spike of switches [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Also, active-clamp technique makes switches operating in zero voltage switching (ZVS) for reducing switches losses.…”

Section: Introductionmentioning

confidence: 99%

Active‐clamping forward converter with non‐linear step‐down conversion

Lin¹,

Tzeng

Lin

et al. 2015

IET Power Electronics

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This study proposes a forward converter with non-linear step-down conversion ratio. In comparison with traditional forward converters, it has a higher duty utilisation ratio. Furthermore, the two output inductors can equally divide the load current, and therefore the current stress of inductors and output diodes can be reduced. Thus, the proposed converter is suitable for high step-down applications. On the primary side, active-clamp control can nullify the voltage spike of main switch while also achieving zero voltage switching operation of the main switch and auxiliary switch, hence the switching loss can be reduced. Detailed analysis and design of the proposed converter are described. Experimental results are recorded for a prototype converter with an AC input voltage ranging from 90 to 264 V, an output voltage of 12 V, and an output power of 240 W.

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