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 inIEEE transactions on power electronics Vol. 20; no. 5; pp. 997 - 1006
Main Authors Ming Xu, Yuancheng Ren, Jinghai Zhou, Lee, F.C.
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.09.2005
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
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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.
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.
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10.1109/APEC.2003.1179247
10.1109/41.720338
10.1109/INTLEC.1996.573367
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Issue 5
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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zhang (ref9) 2002
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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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StartPage 997
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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