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

Se Un Shin; Sung Wan Hong; Hyung Min Lee; Gyu Hyeong Cho

doi:10.1109/TPEL.2019.2954109

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

Se Un Shin, Sung Wan Hong, Hyung Min Lee, Gyu Hyeong Cho

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

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 200 mΩ, the DPUC achieves a high efficiency of 95.2% and a small ripple of up to 15 mV.

Original language	English
Article number	8903550
Pages (from-to)	6025-6038
Number of pages	14
Journal	IEEE Transactions on Power Electronics
Volume	35
Issue number	6
DOIs	https://doi.org/10.1109/TPEL.2019.2954109
Publication status	Published - 2020 Jun

Keywords

Boost converter
dc resistance (DCR)
dual-path step-up dc-dc converter (DPUC)
output delivery current
output voltage ripple
right-half-plane zero (RHP-zero)

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/TPEL.2019.2954109

Cite this

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title = "High-Efficiency Hybrid Dual-Path Step-Up DC-DC Converter with Continuous Output-Current Delivery for Low Output Voltage Ripple",

abstract = "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 200 mΩ, the DPUC achieves a high efficiency of 95.2% and a small ripple of up to 15 mV.",

keywords = "Boost converter, dc resistance (DCR), dual-path step-up dc-dc converter (DPUC), output delivery current, output voltage ripple, right-half-plane zero (RHP-zero)",

author = "Shin, {Se Un} and Hong, {Sung Wan} and Lee, {Hyung Min} and Cho, {Gyu Hyeong}",

note = "Publisher Copyright: {\textcopyright} 1986-2012 IEEE.",

year = "2020",

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doi = "10.1109/TPEL.2019.2954109",

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volume = "35",

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publisher = "Institute of Electrical and Electronics Engineers Inc.",

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AU - Shin, Se Un

AU - Hong, Sung Wan

AU - Lee, Hyung Min

AU - Cho, Gyu Hyeong

PY - 2020/6

Y1 - 2020/6

N2 - 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 200 mΩ, the DPUC achieves a high efficiency of 95.2% and a small ripple of up to 15 mV.

AB - 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 200 mΩ, the DPUC achieves a high efficiency of 95.2% and a small ripple of up to 15 mV.

KW - Boost converter

KW - dc resistance (DCR)

KW - dual-path step-up dc-dc converter (DPUC)

KW - output delivery current

KW - output voltage ripple

KW - right-half-plane zero (RHP-zero)

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JO - IEEE Transactions on Power Electronics

JF - IEEE Transactions on Power Electronics

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ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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