Very low frequency supercapacitor techniques to improve the end-to-end efficiency of DC-DC converters based on commercial off the shelf LDOs
Kularatna, N., Fernando, J., Kankanamge, K. & Tilakaratna, L. (2010). Very low frequency supercapacitor techniques to improve the end-to-end efficiency of DC-DC converters based on commercial off the shelf LDOs. In Proceedings of IECON 2010: 36th Annual Conference on IEEE Industrial Electronics Society, 7-10 November 2010, Glendale, AZ (pp. 721-726). Washington DC, USA: IEEE.
Permanent Research Commons link: https://hdl.handle.net/10289/5070
Given the advantages of linear regulator techniques, low dropout regulator ICs are frequently used in portable consumer electronics. Only disadvantage in linear regulators, low efficiency, can be overcome by a very low frequency supercapacitor energy recovery technique to achieve efficiencies similar to common switching regulator techniques. This technique was successfully applied in a 12 V to 5 V regulator. The article provides some generalized theoretical background and different supercapacitor circulating options which can be applied to different cases of linear regulators.