Back to Search
Start Over
A Performance of the Soft-Charging Operation in Series of Step-Up Power Switched-Capacitor Converters.
- Source :
- Journal of Low Power Electronics & Applications; Mar2018, Vol. 8 Issue 1, p8, 19p
- Publication Year :
- 2018
-
Abstract
- Due to their high power density and appropriateness for small circuits integration, switched-capacitor (SC) converters have gotten more interests. Applying the soft-charging technique effectively eliminates the current transient that results in a higher power density and a higher fundamental efficiency. Achieving the complete soft-charging operation is impossible by using the conventional control diagram for any SC converter topology. In this paper, we proposed a split-phase control to achieve the complete soft-charging operation in a power switched-capacitor (PSC) converter. The proposed control diagramwas designed for a 1-to-4 PSC converter (two-level of the PSC converter). The implemented split-phase diagram successfully controls eight switches to exhibit eight modes of operation. In addition to the current transient elimination, the complete soft-charging allows us to reduce capacitor sizes. However, reducing capacitor size negatively increases the output voltage ripple; hence, an output LC filter is needed. The complete soft-charging achievement accomplishes a 96% efficiency due to the lower output impedance and the dead time switching. LT-Spice software has been used to verify the proposed control and the results were compared with hard-charging and incomplete soft-charging operations. [ABSTRACT FROM AUTHOR]
- Subjects :
- CAPACITOR switching
CONVERTERS (Electronics)
INTEGRATED circuits
Subjects
Details
- Language :
- English
- ISSN :
- 20799268
- Volume :
- 8
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Journal of Low Power Electronics & Applications
- Publication Type :
- Academic Journal
- Accession number :
- 128760189
- Full Text :
- https://doi.org/10.3390/jlpea8010008