On Energy Efficiency of Switched-Capacitor Converters
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Detail(s)
| Original language | English |
|---|---|
| Article number | 6218201 |
| Pages (from-to) | 862-876 |
| Journal / Publication | IEEE Transactions on Power Electronics |
| Volume | 28 |
| Issue number | 2 |
| Online published | 14 Jun 2012 |
| Publication status | Published - Feb 2013 |
| Externally published | Yes |
Link(s)
Abstract
The energy-efficiency issue of switched-capacitor converters is still a controversial topic that requires a more in-depth discussion. In this paper, we address the issue by dividing the analysis of the entire efficiency problem into two parts. In the first part, the efficiency of a capacitor-charging RC circuit under different aspects (partial charging, full charging, at zero capacitor voltage, at nonzero capacitor voltage, etc.) will be conducted. The efficiency analysis of a capacitor-discharging RC circuit with a resistor, capacitor, and paralleled resistor-capacitor loads will be covered. A complete evaluation of the overall efficiency is then performed in terms of both the charging and discharging efficiencies. Based on the analysis, some design rules useful for developing high-efficiency switched-capacitor converters is suggested. Additionally, it is shown that the belief that quasi-switched-capacitor converters are more lossy than switched-capacitor converters is a common misconception. © 1986-2012 IEEE.
Research Area(s)
- Charging efficiency, discharging efficiency, flying capacitor, full charging, full discharging, partial charging, partial discharging, quasi-switched-capacitor (QSC) converter, switched-capacitor (SC) converter
Citation Format(s)
On Energy Efficiency of Switched-Capacitor Converters. / Cheung, Chun-Kit; Tan, Siew-Chong; Tse, Chi K. et al.
In: IEEE Transactions on Power Electronics, Vol. 28, No. 2, 6218201, 02.2013, p. 862-876.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
