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Transformerless DC-to-DC Converters with Large Conversion Ratios
Abstract
A new switching dc-to-dc converter is introduced in which large voltage step-down ratios can be achieved without a very small duty ratio and without a transformer. The circuit is an extension of the Ćuk converter to incorporate a multistage capacitor divider. A particularly suitable application would be a 50V to 5V converter in which dc isolation is not required. The absense of a transformer and a larger duty ratio permits operation at very high switching frequency, and makes the circuit amenable to partial integration and hybrid construction techniques. An experimental three-stage voltage divider Ćuk converter converts 50V to 5V at 50W with an efficiency of 77% at 500 kHz and 71% at 1 MHz, higher than for a basic Ćuk converter operated at the same conditions.
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Citations
Cited by
Forouzesh, M., Siwakoti, Y. P., Gorji, S. A., Blaabjerg, F., & Lehman, B. (2017) · IEEE Transactions on Power Electronics · doi:10.1109/tpel.2017.2652318 · Cited by 2,123
Axelrod, B., Berkovich, Y., & Ioinovici, A. (2008) · IEEE Transactions on Circuits and Systems I: Regular Papers · doi:10.1109/tcsi.2008.916403 · Cited by 1,379
Metadata
- Authors
- Middlebrook, R. D.
- Venue
- INTELEC '84 - International Telecommunications Energy Conference
- Publisher
- IEEE
- Published
- 1984-11
- Pages
- 455-460
- OpenAlex
- W2030407093
- Cited by
- 159
- References
- 0
- FWCI
- 0.96
- Type
- conference paper
- Language
- en
- Open access
- closed
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- Middlebrook, R. D. (1984). Transformerless DC-to-DC Converters with Large Conversion Ratios. INTELEC '84 - International Telecommunications Energy Conference. https://doi.org/10.1109/intlec.1984.4794165
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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