Control System Design of Current-Doubler-Rectifier ZVS PWM FB Converter SUN Qiang，ZHENG Xiang-yu，YU Juan （College of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048，China） Abstract： phase-shifted soft-switching technology and peak current control technology are combined in the research of full bridge phase-shifted ZVS PWM DC-DC converters, and characteristics of peak current control are expatiated. The practical circuit and design method of slop compensation are also given. Finally, simulation results validate the design. Keywords: Peak current control；Slop compensation； UCC3895 0 引言 對應于移相控制全橋(FB)ZVS-PWM變換器這種主電路拓撲,本文采用Unitrode公司UCC3895芯片實施峰值電流的移相控制.由于存在占空比D>50%,電源不能穩定工作,限制了峰值電流控制方式的應用,必須加以斜坡補償改善. 1 主電路拓撲 全橋變換器廣泛應用于中大功率的直流變換場合,移相控制零電壓開關全橋變換器利用變壓器的漏感和開關管的結電容實現開關管的ZVS, 倍流
MMBT3904貨源 PDF 芯片資料 報價 | 倍流整流方式ZVS PWM全橋變換器的控制系統設計
Control System Design of Current-Doubler-Rectifier ZVS PWM FB Converter SUN Qiang，ZHENG Xiang-yu，YU Juan （College of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048，China） Abstract： phase-shifted soft-switching technology and peak current control technology are combined in the research of full bridge phase-shifted ZVS PWM DC-DC converters, and characteristics of peak current control are expatiated. The practical circuit and design method of slop compensation are also given. Finally, simulation results validate the design. Keywords: Peak current control；Slop compensation； UCC3895 0 引言 對應于移相控制全橋(FB)ZVS-PWM變換器這種主電路拓撲,本文采用Unitrode公司UCC3895芯片實施峰值電流的移相控制.由于存在占空比D>50%,電源不能穩定工作,限制了峰值電流控制方式的應用,必須加以斜坡補償改善. 1 主電路拓撲 全橋變換器廣泛應用于中大功率的直流變換場合,移相控制零電壓開關全橋變換器利用變壓器的漏感和開關管的結電容實現開關管的ZVS, 倍流
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