A twin-buck converter with zero-voltage-transition (ZVT) is proposed in this thesis. The converter comprises two identical buck conversion units connected in parallel by an interleaved inductor. The ZVT is accomplished by the resonating the currents between the interleaved inductor and the parasitic capacitances of the power MOSFETs. The circuit efficiency can be further improved by introducing synchronous rectification to reduce the condition loss on the diodes.
The detailed circuit analysis and operation characteristics are provided. A laboratory circuit rated at 300 W is designed and tested. Experimental results show that the switching losses can be effectively reduced by smoothly transiting the currents of the active power switches.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0811109-004731 |
| Date | 11 August 2009 |
| Creators | Chen, Yu-Jen |
| Contributors | Shiang-Hwua Yu, Yong-Nong Chang, Tsai-Fu Wu, Tsair-Rong Chen, Chin-Sien Moo |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0811109-004731 |
| Rights | unrestricted, Copyright information available at source archive |
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