Efficiency Optimization of Supercapacitor Assisted Low Dropout (SCALDO) Regulators
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Date
2020-12
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE
Abstract
This study was primarily focused on presenting a novel method to enhance the efficiency of Supercapacitor Assisted
Low Dropout (SCALDO) regulators. The main objective was to study SCALDO regulators under a specifically controlled
condition where supply voltage is less than twice of the required minimum voltage for Low Dropout (LDO) regulators.
Furthermore, design modifications to the switching controlling algorithm were performed to optimize number of
capacitors with respect to the supply voltage in order to enhance the efficiency of SCALDO regulators. It was
theoretically proven that the efficiency decline can be successfully reduced by varying the number of capacitors
connected, according to the supply voltage and the minimum input voltages. The theoretical efficiency calculated for
the proposed SCALDO technique falls within 81.5% - 88% range, which is well above the previously reported values.
This was verified experimentally with the prototype developed using 2.7 V, 10 F supercapacitors, 5-3.3 V LDO. © 2020
IEEE.
Description
Keywords
End to end efficiency, Low dropout (LDO) regulators, SCALDO regulators, Supercapacitor, Electric current regulators
Citation
Jayasekara, L. D. P. S., Piyumal, P. L. A. K., Ranaweera, A. L. A. K., & Kalingamudali, S. R. D. (2020, December). Efficiency Optimization of Supercapacitor Assisted Low Dropout (SCALDO) Regulators. 2020 IEEE 8th R10 Humanitarian Technology Conference (R10-HTC). https://doi.org/10.1109/r10-htc49770.2020.9356952