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A Gain/Efficiency-Improved Serial-Parallel Switched-Capacitor Step-Up DC–DC Converter.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . Oct2013, Vol. 60 Issue 10, p2799-2809. 11p. - Publication Year :
- 2013
-
Abstract
- <?Pub Dtl?>A new scheme of a gain/efficiency-improved serial- parallel switched-capacitor converter (SPSCC) is proposed by combining an adaptive-conversion-ratio (ACR) and pulse-width- modulation (PWM) control for step-up DC–DC conversion. For improving gain, the power part consists of one mc-stage cell and one nc-stage cell in cascade to obtain the step-up gain of (mc+1)\times(nc+1) at most. For improving efficiency, the ACR control with adapting stage number m,n is presented to select a proper gain of (m+1)\times(n+1) (m=1,2,\ldots,mc, n=1,2,\ldots,nc) according to the desired output. Further, the PWM control is adopted to enhance output regulation as well as robustness to source/loading variation. Some theoretical analysis and control design include: formulation, steady-state analysis, conversion ratio, efficiency, output ripple, stability, capacitance selection, and control design. Finally, the performance of this scheme is verified experimentally on a SPSCC prototype, and all results are illustrated to show the efficacy of this scheme. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 60
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 90677067
- Full Text :
- https://doi.org/10.1109/TCSI.2013.2248833