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Comparison of Wide- and High-Frequency Duty-Ratio-to-Inductor-Current Transfer Functions of DC–DC PWM Buck Converter in CCM

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2 Author(s)
Nisha Kondrath ; Department of Electrical and Computer Engineering, University of Minnesota Duluth, Duluth, MN, USA ; Marian K. Kazimierczuk

Wide- (WF) and high-frequency (HF) small-signal models are presented for pulsewidth-modulated dc-dc buck converter power stage. An exact duty-ratio-to-inductor-current transfer function is derived using the WF model and compared to an approximate transfer function derived using the HF model for the buck converter power stage in continuous conduction mode. The theoretical results are validated using experimental results.

Published in:

IEEE Transactions on Industrial Electronics  (Volume:59 ,  Issue: 1 )