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Sampled-Data Modeling of Switched- Capacitor Voltage Regulator With Frequency-Modulation Control

Abstract : The development of systems-on-chip requires embedded power management solutions due to the large number of power domains. The switched-capacitor voltage regulator is a suitable candidate as capacitors may be integrated whereas inductors still suffer limitations in that respect. Literature covers proposals of optimized power stages and several dedicated controllers for switched-capacitor DC-DC converters. Unfortunately the results do not cover systematic stability analyses. The paper proposes an original and systematic approach for the stability analysis of a switched-capacitor voltage regulator using sampled-data modeling. An application is given for a one-phase converter with a frequency-modulation based controller. The stability of the open-loop and closed-loop model is proposed and can be extended to multi-phase configurations.
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https://hal.archives-ouvertes.fr/hal-01985094
Contributor : Xuefang Lin-Shi <>
Submitted on : Thursday, January 17, 2019 - 3:49:46 PM
Last modification on : Tuesday, April 7, 2020 - 2:02:13 AM

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Thomas Souvignet, Bruno Allard, Xuefang Lin-Shi. Sampled-Data Modeling of Switched- Capacitor Voltage Regulator With Frequency-Modulation Control. IEEE Transactions on Circuits and Systems I: Regular Papers, IEEE, 2015, 62 (4), pp.957-966. ⟨10.1109/TCSI.2015.2399025⟩. ⟨hal-01985094⟩

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