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反激式开关电源控制芯片中的高精度原边反馈技术 被引量：12

High accuracy primary-side feedback technology for flyback controller IC
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摘要 本文提出了一种用于反激式开关电源控制芯片的高精度原边反馈技术,可以自动追踪原边辅助绕组电压的膝电压位置,得到高精度的反馈电压并将其进行模数转换输出反馈量VFB,控制芯片中的数字补偿模块根据VFB的值调节开关管的导通时间,最终实现输出电压的精确调制。本文提出的反馈技术采用csmc0.18 m工艺实现,验证结果显示本设计可以很好的检测到膝电压,实现了精确的原边反馈。 This paper presents a high accuracy primary side feedback technology,which can be used in a flyback controller IC.It can auto track the knee voltage of the auxiliary side voltage（Vsense） and converts this voltage to digital single（VFB） that can be sent to a digital compensator.The digital compensator of the controller IC adjusts the output voltage according to the VFB.In order to verify the presented technology it has been designed with csmc0.18μm process.
作者 邱建平 林玲 何乐年
机构地区 浙江大学超大规模集成电路设计研究所
出处 《电路与系统学报》 北大核心 2013年第1期403-407,共5页 Journal of Circuits and Systems
关键词 反激式电源变压器 原边反馈 高精度 数字补偿 自动追踪 flyback primary-side feedback high accuracy digital compensator auto track
分类号 TN401 [电子电信—微电子学与固体电子学]
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参考文献8

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同被引文献36

  • 1平立.白光LED驱动综述[J].现代显示,2006(6):44-48. 被引量：17
  • 2Fairchild Inc.Design guideline for primary side regulated (PSR)flyback converter using FAN103[EV/OL].(2011-11-16)[2013-12-20].http://www.fairchildsemi.com/an/AN/AN-8033.pdf.
  • 3ADRAGNA C.Primary-controlled high-PF flyback converters deliver constant dc output current[C]//Power Electronics and Applications,Geneva:IEEE Press,2011.
  • 4XIE Xiaogao.A novel output current estimation and regulation circuit for primary side controlled high power factor single-stage flyback LED driver[C]//Power Electronics,Berlin:IEEE Press,2012.
  • 5普利斯曼.开关电源设计[M].王志强,译.北京:电子工业出版社.2012.
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  • 7刘福博.绿色模式原边反馈PWM控制芯片XD5173的设计[D].西安:西安电子科技大学,2012.
  • 8NALEPA R, BARRY N, MEANEY P. Primary side control circuit of a flyback converter [C]//Applied Power Electronics Conference and Exposition, 2001, Sixteenth Annual IEEE. Anuheim, USA: IEEE, 2001.
  • 9CHANG C, LIN Y, TZOU Y. Digital primary-side sensing control for flyback converters [J]. Power Electron Drive Syst, 2009, 14(8): 689-692.
  • 10SAYANI M P, WHITE R V, NASON D G, et al. Isolated feedback for off-line switching power supplies with primary-side control [C] //APEC'88. New Orleans, LA, USA. 1988: 202-211.

引证文献12

二级引证文献14

电路与系统学报
2013年 第1期

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