| 基于UC3879的移相全桥ZVZCS变换器的研究与实现 |
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| 引用本文： | 赵俊宝,贲洪奇,原树斌.基于UC3879的移相全桥ZVZCS变换器的研究与实现[J].电源技术应用,2007,10(11):12-16. |
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| 作者姓名： | 赵俊宝 贲洪奇 原树斌 |
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| 作者单位： | 哈尔滨工业大学 黑龙江哈尔滨150001(赵俊宝，贲洪奇)，名达能源技术有限公司 上海201209(原树斌) |
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| 摘 要： | 介绍了一种移相全桥零电压零电流DC/DC变换器,通过在变压器原边设置隔直电容,使原边电流复位,实现滞后臂的零电流开关(ZCS);同时还可起到抑制变压器偏磁的作用。为了防止变压器原边电流反向,在滞后臂开关管上串联了二极管。UC3879是一种专用的移相控制芯片,给出了其在峰值电流控制模式下的相关外围电路。基于上述思想,设计了一台输出为600V/1A的直流电源,验证了软开关特性,用户实际使用还表明电源工作稳定、可靠性好。
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| 关 键 词： | 隔直电容 零电流开关 串联二极管 UC3879 峰值电流控制 |
| 修稿时间： | 2007-03-12 |
Research and Realization of PS-FB-ZVZCS Converter Based on UC3879 |
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| ZHAO Jun-bao, BEN Hong-qi, YUAN Shu-bin Co. Ltd., Shanghai , China.Research and Realization of PS-FB-ZVZCS Converter Based on UC3879[J].Power Supply Technologles and Applications,2007,10(11):12-16. |
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| Authors: | ZHAO Jun-bao BEN Hong-qi YUAN Shu-bin Co Ltd Shanghai China |
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| Affiliation: | 1.Harbin Institute of Technology, Harbin Heilongjiang 150001, China;2.Delta Electronics (Shanghai |
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| Abstract: | A phase shifted full bridge ZVZCS DC/DC converter is introduced.Through setting up blocking capacity in the primary side of transformer,the primary current can be reset so as to realize ZCS of lagging leg switches and the power transformer's bias in the full-bridge converter can he suppressed as well.The diodes are serial with lagging leg switches to prevent the primary current from flowing reversely.UC3879 is an appropriative phase shifted controller and its external circuit when it's used in the mode of peak current control is proposed.Based on the ideas above,a 600V/1A DC power supply was designed and the soft switch characteristics were proved.After being used,it turns out to be steady and reliable. |
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| Keywords: | blocking capacitor zero current switch serial diode UC3879 peak current control |
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