1-MHz self-driven ZVS full-bridge converter for 48-V power pod and DC/DC brick
In this paper, a self-driven zero-voltage-switching (ZVS) full-bridge converter is proposed. With the proposed self-driven scheme, the combination of the ZVS technique and Self-driven technique recycles the gate driving energy by making use of the input capacitor of the secondary side synchronous re...
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Published in | IEEE transactions on power electronics Vol. 20; no. 5; pp. 997 - 1006 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
New York, NY
IEEE
01.09.2005
Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subjects | |
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Abstract | In this paper, a self-driven zero-voltage-switching (ZVS) full-bridge converter is proposed. With the proposed self-driven scheme, the combination of the ZVS technique and Self-driven technique recycles the gate driving energy by making use of the input capacitor of the secondary side synchronous rectifier (SR) as the snubber capacitor of the primary side switches. Compared with the external driver, the proposed converter can save driving loss and synchronous rectifier body diode conduction loss. Additionally, compared with the existed level-shifted self-driven scheme for bridge-type symmetrical topologies, its gate signal is very clean and suitable for high-frequency applications. A 1-MHz, 1.2-V/70-A prototype is built to verify the analysis. Experimental results show that it can achieve 81.7% efficiency. And there is an efficiency improvement of 4.7% over conventional phase-shifted full-bridge converter with an external driver. |
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AbstractList | In this paper, a self-driven zero-voltage-switching (ZVS) full-bridge converter is proposed. With the proposed self-driven scheme, the combination of the ZVS technique and Self-driven technique recycles the gate driving energy by making use of the input capacitor of the secondary side synchronous rectifier (SR) as the snubber capacitor of the primary side switches. Compared with the external driver, the proposed converter can save driving loss and synchronous rectifier body diode conduction loss. Additionally, compared with the existed level-shifted self-driven scheme for bridge-type symmetrical topologies, its gate signal is very clean and suitable for high-frequency applications. A 1-MHz, 1.2-V/70-A prototype is built to verify the analysis. Experimental results show that it can achieve 81.7% efficiency. And there is an efficiency improvement of 4.7% over conventional phase-shifted full-bridge converter with an external driver. In this paper, a self-driven zero-voltage-switching (ZVS) full-bridge converter is proposed. With the proposed self-driven scheme, the combination of the ZVS technique and Self-driven technique recycles the gate driving energy by making use of the input capacitor of the secondary side synchronous rectifier (SR) as the snubber capacitor of the primary side switches. Compared with the external driver, the proposed converter can save driving loss and synchronous rectifier body diode conduction loss. Additionally, compared with the existed level-shifted self-driven scheme for bridge-type symmetrical topologies, its gate signal is very clean and suitable for high-frequency applications. A 1-MHz, 1.2-V/70-A prototype is built to verify the analysis. Experimental results show that it can achieve 81.7% efficiency. And there is an efficiency improvement of 4.7% over conventional phase-shifted full-bridge converter with an external driver.[PUBLICATION ABSTRACT] |
Author | Yuancheng Ren Ming Xu Jinghai Zhou Lee, F.C. |
Author_xml | – sequence: 1 surname: Ming Xu fullname: Ming Xu organization: Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA – sequence: 2 surname: Yuancheng Ren fullname: Yuancheng Ren organization: Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA – sequence: 3 surname: Jinghai Zhou fullname: Jinghai Zhou organization: Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA – sequence: 4 givenname: F.C. surname: Lee fullname: Lee, F.C. organization: Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA |
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Keywords | Waveform Rectifier Power converter power pod Prototype Computer power supplies self-driven Snubbers Zero voltage switching Power electronics Experimental study Energy loss Experimental result Network analysis zero voltage switching (ZVS) High frequency Computer server Synchronous circuit Comparative study Bridge convertor DC/DC brick |
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Snippet | In this paper, a self-driven zero-voltage-switching (ZVS) full-bridge converter is proposed. With the proposed self-driven scheme, the combination of the ZVS... |
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SubjectTerms | Applied sciences Capacitors Converters DC/DC brick Diodes Direct current Drivers Driving Electric currents Electrical engineering. Electrical power engineering Energy consumption Energy efficiency Exact sciences and technology Gates Microprocessors Power electronics, power supplies power pod Power system transients Pulse width modulation Rectifiers self-driven Strontium Switching frequency Synchronous Topology Zero voltage switching zero voltage switching (ZVS) |
Title | 1-MHz self-driven ZVS full-bridge converter for 48-V power pod and DC/DC brick |
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