High conversion ratio DC-DC converter with isolated transformer and switched-clamp capacitor for Taiwan photon source
A new high step-up voltage converter that combines a switch capacitor and isolated transformer, together with a passive clamp circuit, is employed to reduce voltage stress on the main power switch. The voltage stress of the power switch should be clamped to 1/4 Vo, and the proposed converter can ach...
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Published in | Journal of instrumentation Vol. 12; no. 12; p. T12005 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Bristol
IOP Publishing
19.12.2017
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Subjects | |
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Abstract | A new high step-up voltage converter that combines a switch capacitor and isolated transformer, together with a passive clamp circuit, is employed to reduce voltage stress on the main power switch. The voltage stress of the power switch should be clamped to 1/4 Vo, and the proposed converter can achieve high step-up voltage gain with appropriate duty ratio. The energy of the leakage inductor can be recycled by the clamp capacitor because of the passive clamp circuit, and low On-state resistance RDS(on) of the power switch can be adopted to reduce the conduction loss. In this paper, several mathematical derivations are presented, CCM and DCM operating principle are discussed, and experimental results are provided to verify the effectiveness of converter topology. Finally, a 24-V-input voltage to 200-V-output voltage and a 150 W output power prototype converter are fabricated in the laboratory. |
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AbstractList | A new high step-up voltage converter that combines a switch capacitor and isolated transformer, together with a passive clamp circuit, is employed to reduce voltage stress on the main power switch. The voltage stress of the power switch should be clamped to 1/4 Vo, and the proposed converter can achieve high step-up voltage gain with appropriate duty ratio. The energy of the leakage inductor can be recycled by the clamp capacitor because of the passive clamp circuit, and low On-state resistance RDS(on) of the power switch can be adopted to reduce the conduction loss. In this paper, several mathematical derivations are presented, CCM and DCM operating principle are discussed, and experimental results are provided to verify the effectiveness of converter topology. Finally, a 24-V-input voltage to 200-V-output voltage and a 150 W output power prototype converter are fabricated in the laboratory. |
Author | Chen, J.-F. Wong, Y.-S. Hsieh, Y.-P. Liu, K.-B. |
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Cites_doi | 10.1109/TPEL.2015.2429651 10.1109/tie.2009.2029589 10.1109/tie.2005.862251 10.1049/iet-pel.2014.0785 10.1109/tpel.2005.857529 10.1049/iet-pel.2010.0401 10.1109/TIE.2014.2327000 10.1109/tie.2014.2386284 10.1109/TIE.2013.2244541 10.1109/tsg.2014.2374163 10.1109/TPEL.2005.854023 10.1109/TIE.2011.2177789 10.1109/tpel.2011.2160876 10.1109/TIE.2013.2278517 10.1109/TIE.2006.878356 10.1109/MIE.2010.935861 10.1109/TIE.2011.2151828 10.1109/tie.2011.2107721 10.1109/tie.2009.2032206 10.1049/iet-pel.2009.0246 10.1109/APEC.2009.4802683 10.1109/TIE.2007.903925 10.1109/tpel.2007.909248 10.1049/iet-pel.2010.0232 |
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SubjectTerms | Capacitors Circuits Conduction losses Conversion ratio Topology Transformers Voltage converters (DC to DC) Voltage gain |
Title | High conversion ratio DC-DC converter with isolated transformer and switched-clamp capacitor for Taiwan photon source |
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