Design and analysis of quasi-switched-capacitor step-up DC/DC converters

Henry Chung

doi:10.1109/ISCAS.1998.705305

Design and analysis of quasi-switched-capacitor step-up DC/DC converters

Henry Chung

City University of Hong Kong

Research output: Journal Publications and Reviews › RGC 22 - Publication in policy or professional journal

9 Citations (Scopus)

Abstract

A switched-capacitor (SC)-based step-up new DC/DC converter is proposed. It has the prominent features of continuous input current waveform and having better regulation capability than the traditional SC converters. The problem of conducted electromagnetic interference (EMI) with the supply network is minimized. Concept of energy transfer is achieved by using dual basic SC step-up converter cells operating in anti-phase. The voltage conversion ratio is controlled by a current control scheme in order to adjust the charging profile of the capacitors. A generalized n-stage converter is presented and is analyzed by a simplified third order state-space equation set. The static and dynamic behaviors and the design constraints of the proposed converter are derived. A prototype of 30 W, 5 V/12 V, 2-stage converter has been built, giving an overall efficiency of 78% with power density of 15 W/in³.

Original language	English
Pages (from-to)	438-441
Journal	Proceedings - IEEE International Symposium on Circuits and Systems
Volume	6
DOIs	https://doi.org/10.1109/ISCAS.1998.705305
Publication status	Published - 1998
Event	Proceedings of the 1998 IEEE International Symposium on Circuits and Systems, ISCAS. Part 5 (of 6) - Monterey, CA, USA Duration: 31 May 1998 → 3 Jun 1998

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abstract = "A switched-capacitor (SC)-based step-up new DC/DC converter is proposed. It has the prominent features of continuous input current waveform and having better regulation capability than the traditional SC converters. The problem of conducted electromagnetic interference (EMI) with the supply network is minimized. Concept of energy transfer is achieved by using dual basic SC step-up converter cells operating in anti-phase. The voltage conversion ratio is controlled by a current control scheme in order to adjust the charging profile of the capacitors. A generalized n-stage converter is presented and is analyzed by a simplified third order state-space equation set. The static and dynamic behaviors and the design constraints of the proposed converter are derived. A prototype of 30 W, 5 V/12 V, 2-stage converter has been built, giving an overall efficiency of 78\% with power density of 15 W/in3.",

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year = "1998",

doi = "10.1109/ISCAS.1998.705305",

language = "English",

volume = "6",

pages = "438--441",

journal = "Proceedings - IEEE International Symposium on Circuits and Systems",

issn = "0271-4310",

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note = "Proceedings of the 1998 IEEE International Symposium on Circuits and Systems, ISCAS. Part 5 (of 6) ; Conference date: 31-05-1998 Through 03-06-1998",

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T1 - Design and analysis of quasi-switched-capacitor step-up DC/DC converters

AU - Chung, Henry

PY - 1998

Y1 - 1998

N2 - A switched-capacitor (SC)-based step-up new DC/DC converter is proposed. It has the prominent features of continuous input current waveform and having better regulation capability than the traditional SC converters. The problem of conducted electromagnetic interference (EMI) with the supply network is minimized. Concept of energy transfer is achieved by using dual basic SC step-up converter cells operating in anti-phase. The voltage conversion ratio is controlled by a current control scheme in order to adjust the charging profile of the capacitors. A generalized n-stage converter is presented and is analyzed by a simplified third order state-space equation set. The static and dynamic behaviors and the design constraints of the proposed converter are derived. A prototype of 30 W, 5 V/12 V, 2-stage converter has been built, giving an overall efficiency of 78% with power density of 15 W/in3.

AB - A switched-capacitor (SC)-based step-up new DC/DC converter is proposed. It has the prominent features of continuous input current waveform and having better regulation capability than the traditional SC converters. The problem of conducted electromagnetic interference (EMI) with the supply network is minimized. Concept of energy transfer is achieved by using dual basic SC step-up converter cells operating in anti-phase. The voltage conversion ratio is controlled by a current control scheme in order to adjust the charging profile of the capacitors. A generalized n-stage converter is presented and is analyzed by a simplified third order state-space equation set. The static and dynamic behaviors and the design constraints of the proposed converter are derived. A prototype of 30 W, 5 V/12 V, 2-stage converter has been built, giving an overall efficiency of 78% with power density of 15 W/in3.

UR - https://www.scopus.com/pages/publications/0031618684

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U2 - 10.1109/ISCAS.1998.705305

DO - 10.1109/ISCAS.1998.705305

M3 - RGC 22 - Publication in policy or professional journal

SN - 0271-4310

VL - 6

SP - 438

EP - 441

JO - Proceedings - IEEE International Symposium on Circuits and Systems

JF - Proceedings - IEEE International Symposium on Circuits and Systems

T2 - Proceedings of the 1998 IEEE International Symposium on Circuits and Systems, ISCAS. Part 5 (of 6)

Y2 - 31 May 1998 through 3 June 1998

ER -

Design and analysis of quasi-switched-capacitor step-up DC/DC converters

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