| 一种新型正激零电压零电流转换PWM DC/DC变换器 |
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| 引用本文： | 段守圣,王志强.一种新型正激零电压零电流转换PWM DC/DC变换器[J].通信电源技术,2007,24(6):51-54. |
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| 作者姓名： | 段守圣 王志强 |
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| 作者单位： | 华南理工大学雅达实验室,广东,广州,510640 |
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| 摘 要： | 提出一种新型的零电压零电流转换(ZCZVT)的正激拓扑。拓扑工作频率为300kHz,能实现主开关管的零电压开通(ZVS)和零电流关断(ZCS),同时辅助开关管也能实现零电流关断(ZCS),且变压器的磁通复位不需要辅助绕组。文章进行了拓扑的稳态分析,并且讨论了谐振电路的参数设计。最后,在研制一台48V输入、12V/100W输出样机的基础上,实验验证这种新型正激ZCZVT PWM DC-DC变换器的软开关特性。
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| 关 键 词： | 正激变换器 软开关 零电压零电流转换(ZCZVT) |
| 文章编号： | 1009-3664（2007）06-0051-04 |
| 收稿时间： | 2007-06-08 |
| 修稿时间： | 2007年6月8日 |
A Novel Forward DC/DC Converter with ZCZVT |
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| DUAN Shou-sheng,WANG Zhi-qiang.A Novel Forward DC/DC Converter with ZCZVT[J].Telecom Power Technologies,2007,24(6):51-54. |
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| Authors: | DUAN Shou-sheng WANG Zhi-qiang |
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| Abstract: | A novel zero-current-zero-voltage transition(ZCZVT) forward converter is presented in this paper.The proposed converter is operating at 300 kHz and processes the features of both zero-voltage transition(ZVT) at turn on and zero-current transition(ZCT) at turn off for the main switch.The auxiliary switch also achieves zero-current switching(ZCS).The flux of transformer can be reset without tertiary winding.The steady-state analysis and design considerations are investigated in detail in this work.For 48 V input and 12 V 100 W output,a prototype of the proposed converter for 300 kHz switching is built to verify the theoretical analysis of soft switching. |
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| Keywords: | forward converter soft switching zero-current and zero-voltage transition(ZCZVT) |
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