Switched-capacitor converter configuration with low EMI emission obtained by interleaving and its large-signal modeling

Siew Chong Tan; Moshe Nur; Sitthisak Kiratipongvoot; Svetlana Bronstein; Y. M. Lai; Chi Kong Tse; Adrian Ioinovici

doi:10.1109/ISCAS.2009.5117947

Switched-capacitor converter configuration with low EMI emission obtained by interleaving and its large-signal modeling

Siew Chong Tan, Moshe Nur, Sitthisak Kiratipongvoot, Svetlana Bronstein, Y. M. Lai, Chi Kong Tse, Adrian Ioinovici

The Hong Kong Polytechnic University

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

39 Citations (Scopus)

Abstract

The switched-capacitor converters are ideal switching-mode power supplies for portable electronic consumers due to their light weight, small size, and high power density. However, they suffer from a discontinuous input current waveform with large di/dt, what leads to significant electromagnetic interference (EMI) emission. This paper proposes a configuration of switched-capacitor converters connected in parallel with their inputs and outputs interleaved. The interleaving times are calculated by taking into account the fast capacitor-charging characteristic, and the need to have the nominal operating point on its linear part for increasing the regulation range at changes in the input voltage and load. To improve control performance and avoid the use of small-signal linearization in the control design, a large-signal approach is adopted for modeling the converter, allowing for a design of a sliding mode control.

Original language	English
Title of host publication	2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009
Pages	1081-1084
Number of pages	4
DOIs	https://doi.org/10.1109/ISCAS.2009.5117947
Publication status	Published - 26 Oct 2009
Event	2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009 - Taipei, Taiwan Duration: 24 May 2009 → 27 May 2009

Conference

Conference	2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009
Country/Territory	Taiwan
City	Taipei
Period	24/05/09 → 27/05/09

ASJC Scopus subject areas

Electrical and Electronic Engineering

More information

10.1109/ISCAS.2009.5117947

Cite this

Tan, S. C., Nur, M., Kiratipongvoot, S., Bronstein, S., Lai, Y. M., Tse, C. K., & Ioinovici, A. (2009). Switched-capacitor converter configuration with low EMI emission obtained by interleaving and its large-signal modeling. In 2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009 (pp. 1081-1084). Article 5117947 https://doi.org/10.1109/ISCAS.2009.5117947

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Tan, SC, Nur, M, Kiratipongvoot, S, Bronstein, S, Lai, YM, Tse, CK & Ioinovici, A 2009, Switched-capacitor converter configuration with low EMI emission obtained by interleaving and its large-signal modeling. in 2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009., 5117947, pp. 1081-1084, 2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009, Taipei, Taiwan, 24/05/09. https://doi.org/10.1109/ISCAS.2009.5117947

Switched-capacitor converter configuration with low EMI emission obtained by interleaving and its large-signal modeling. / Tan, Siew Chong; Nur, Moshe; Kiratipongvoot, Sitthisak et al.
2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009. 2009. p. 1081-1084 5117947.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

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AU - Tan, Siew Chong

AU - Nur, Moshe

AU - Kiratipongvoot, Sitthisak

AU - Bronstein, Svetlana

AU - Lai, Y. M.

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AU - Ioinovici, Adrian

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AB - The switched-capacitor converters are ideal switching-mode power supplies for portable electronic consumers due to their light weight, small size, and high power density. However, they suffer from a discontinuous input current waveform with large di/dt, what leads to significant electromagnetic interference (EMI) emission. This paper proposes a configuration of switched-capacitor converters connected in parallel with their inputs and outputs interleaved. The interleaving times are calculated by taking into account the fast capacitor-charging characteristic, and the need to have the nominal operating point on its linear part for increasing the regulation range at changes in the input voltage and load. To improve control performance and avoid the use of small-signal linearization in the control design, a large-signal approach is adopted for modeling the converter, allowing for a design of a sliding mode control.

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Switched-capacitor converter configuration with low EMI emission obtained by interleaving and its large-signal modeling

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