High-Efficiency Hybrid Dual-Path Step-Up DC-DC Converter With Continuous Output-Current Delivery for Low Output Voltage Ripple

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This article proposes a new boost converter topology called dual-path step-up dc-dc converter (DPUC). Unlike the conventional boost converter (CBC), the DPUC has a hybrid structure using one inductor and one flying capacitor to make dual current delivery paths. This allows continuous current delivering to the output, reducing both the dc level of the inductor current and the output voltage ripple. Therefore, the DPUC has higher efficiency and smaller output voltage ripple than those of the CBC. In addition, the feedforward characteristic of the flying capacitor can alleviate the effect of right-half-plane zero that degrades the transient response. Even with the inductor dc resistance of 200m Omega, the DPUC achieves a high efficiency of 95.2% and a small ripple of up to 15 mV.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2020-06
Language
English
Article Type
Article
Citation

IEEE TRANSACTIONS ON POWER ELECTRONICS, v.35, no.6, pp.6025 - 6038

ISSN
0885-8993
DOI
10.1109/TPEL.2019.2954109
URI
http://hdl.handle.net/10203/275982
Appears in Collection
EE-Journal Papers(저널논문)
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