Modular Series Capacitor Buck Topology for Point of Load Applications with Duty Cycle Freer

Zhichun Wang; Peng Fang

doi:10.1109/compel52896.2023.10221005

Modular Series Capacitor Buck Topology for Point of Load Applications with Duty Cycle Freer

Zhichun Wang
, Peng Fang

Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Scopus citations

Abstract

High step-down ratio converters, such as a 48V-1V point of load converter, present cases with significant switching and conduction losses at the same time. One effective solution to reduce these losses is achieving a modularized design, where each module only shares a small fraction of the input voltage and load current. In this paper, we investigate a modular power conversion architecture based on a series capacitor Buck topology. In addition, we proposed a solution to free duty cycle limitation associated with series capacitor Buck converter to enable fast transient response. An experimental prototype has been built and tested to validate the proposed method.

Original language	English (US)
Title of host publication	2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798350316186
DOIs	https://doi.org/10.1109/compel52896.2023.10221005
State	Published - 2023
Event	24th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2023 - Ann Arbor, United States Duration: Jun 25 2023 → Jun 28 2023

Publication series

Name	2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023

Conference

Conference	24th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2023
Country/Territory	United States
City	Ann Arbor
Period	6/25/23 → 6/28/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Keywords

fast transient response
Modular Power Architecture
Series Capacitor Buck converter

Publisher link

10.1109/compel52896.2023.10221005

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Wang, Z., & Fang, P. (2023). Modular Series Capacitor Buck Topology for Point of Load Applications with Duty Cycle Freer. In 2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023 (2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/compel52896.2023.10221005

Modular Series Capacitor Buck Topology for Point of Load Applications with Duty Cycle Freer. / Wang, Zhichun; Fang, Peng.
2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023. Institute of Electrical and Electronics Engineers Inc., 2023. (2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Wang, Z & Fang, P 2023, Modular Series Capacitor Buck Topology for Point of Load Applications with Duty Cycle Freer. in 2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023. 2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023, Institute of Electrical and Electronics Engineers Inc., 24th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2023, Ann Arbor, United States, 6/25/23. https://doi.org/10.1109/compel52896.2023.10221005

Wang Z, Fang P. Modular Series Capacitor Buck Topology for Point of Load Applications with Duty Cycle Freer. In 2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023. Institute of Electrical and Electronics Engineers Inc. 2023. (2023 IEEE 24th Workshop on Control and Modeling for Power Electronics, COMPEL 2023). doi: 10.1109/compel52896.2023.10221005

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abstract = "High step-down ratio converters, such as a 48V-1V point of load converter, present cases with significant switching and conduction losses at the same time. One effective solution to reduce these losses is achieving a modularized design, where each module only shares a small fraction of the input voltage and load current. In this paper, we investigate a modular power conversion architecture based on a series capacitor Buck topology. In addition, we proposed a solution to free duty cycle limitation associated with series capacitor Buck converter to enable fast transient response. An experimental prototype has been built and tested to validate the proposed method.",

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AB - High step-down ratio converters, such as a 48V-1V point of load converter, present cases with significant switching and conduction losses at the same time. One effective solution to reduce these losses is achieving a modularized design, where each module only shares a small fraction of the input voltage and load current. In this paper, we investigate a modular power conversion architecture based on a series capacitor Buck topology. In addition, we proposed a solution to free duty cycle limitation associated with series capacitor Buck converter to enable fast transient response. An experimental prototype has been built and tested to validate the proposed method.

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Modular Series Capacitor Buck Topology for Point of Load Applications with Duty Cycle Freer

Abstract

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