| 初级反馈AC/DC转换器的高低压OCP补偿电路设计 |
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| 引用本文： | 李海松,刘佑宝.初级反馈AC/DC转换器的高低压OCP补偿电路设计[J].中山大学学报(自然科学版),2008(Z1). |
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| 作者姓名： | 李海松 刘佑宝 |
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| 作者单位： | 西安微电子技术研究所; |
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| 摘 要： | 初级反馈结构形式的AC/DC转换器近几年来引起了国内外学者与应用工程师的研究和关注。对初级反馈结构的AC/DC转换器进行高低压过流保护(OCP)补偿,是提高此种结构AC/DC转换器性能,扩大其使用范围的关键性技术。论文介绍了一种在系统板级补偿初级反馈AC/DC转换器高低压OCP的方法后,提出一种利用驱动管导通时间的不同来补偿高低压OCP的方法。论文论证了利用驱动管导通时间不同实现高低压OCP补偿的原理,并采用此方法设计了一款初级反馈AC/DC转化器且投入实用。通过对设计的无高低压OCP补偿和有高低压OCP补偿两种AC/DC转换器进行对比测试,结果表明论文提出的补偿方法可以将AC/DC转换器的高低压OCP差值缩小33～47mA,提高了转换器的性能,对初级反馈AC/DC转化器的设计具有一定的参考意义。
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| 关 键 词： | AC/DC转换器 初级反馈 过流保护 驱动管导通时间 |
A Kind of OCP's Compensation Circuit Design Between High Line and Low Line in Primary-side Feedback AC/DC Converter |
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| LI Hai-song,LIU You-bao.A Kind of OCP's Compensation Circuit Design Between High Line and Low Line in Primary-side Feedback AC/DC Converter[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2008(Z1). |
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| Authors: | LI Hai-song LIU You-bao |
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| Institution: | LI Hai-song,LIU You-bao (Xi\'an Microelectronics Technology Institute,Xi\'an 710054,China) |
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| Abstract: | There has been a configuration of primary-side feedback(PSF)in AC/DC converter,which has gotten a wide attention and research recently.To improve the PSF AC/DC converter's performance and widen its use,it is necessary to compensate the over current protection(OCP)point of PSF AC/DC converter at high line and low line.In this paper,after introducing a way to compensate OCP at board level,a new way is proposed,which utilizes the difference of turn-on time of driving transistor of PSF AC/DC converter to compen... |
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| Keywords: | AC/DC converter primary-side feedback over current protection(OCP) turn-on time of driving transistor |
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