基于LPC2214的ZVZCS-PWM全桥变换控制器的研究  

Design of Phase-Shifted Full-Bridge ZVZCS Converter Based on ARM

作　　者：龚希宾[1] 

机构地区：[1]江苏淮安信息职业技术学院,江苏淮安223003

出　　处：《通信电源技术》2009年第4期36-38,共3页Telecom Power Technology

摘　　要：针对传统ZVZCS-PWM DC/DC全桥变换器在实现滞后桥臂开关管零电流开关过程中,存在着辅助谐振电路附加损耗较大,软开关实现方式复杂,功率开关管电压应力和电流应力高等缺点,介绍了一种新型次级箝位移相控制的ZVZCS PWM DC/DC全桥变换器。文中分析了该变换器实现软开关的原理,同时设计了变换器数字控制系统,控制器采用LPC2214型ARM芯片,并通过一台实验样机验证了这种软开关变换器相关理论的正确性以及该数字控制系统的可行性。Convertional full-bridge Zero-Voltage and Zero-Current switching（ZVZCS）PWM DC-DC converters exist some disadvantages in the operating process of ZCS for lagging leg. These problems include additional losses in auxiliary circuit, complicated realization for soft-switching, and high voltage and curent stresses of switches. A full-bridge ZVZCS PWM DC-DC converter with coupled output inductor was proposed to resolve these issues. The soft-switching operating principle of the converter was analyzed, and digital control system was designed using ARM chip LCP2214. A prototype has verified the principle and characteristics of the proposed soft-switching convener and the feasibility of the digital control system.

关 键 词：全桥变换器 软开关 数字控制系统 

分 类 号：TM46[电气工程—电器]