Small-signal modeling for design of robust variable-frequency flyback battery chargers for portable device applications
作者： J. Lempinen , T. Suntio
关键词: Robust control 、 Loop gain 、 Engineering 、 Battery charger 、 Feedback loop 、 Electronic engineering 、 Flyback transformer 、 Voltage 、 Control theory 、 Flyback converter 、 Bandwidth (signal processing)
摘要: A novel methodology to derive small-signal models for a peak-current controlled variable-frequency flyback converter operating in boundary mode is presented. The loop gain of universal input 5-W battery charger mobile phones analyzed and compared the predictions. results obtained show good correlation between predictions measurements validating modeling. implications (i.e. RHP ESR zeros as well opto-coupler feedback loop) controller design discussed.
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