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一种离散频率的PFM控制方式 被引量：3

Design of a Discrete Pulse Frequency Modulation
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摘要 设计了一种离散频率的PFM控制方式。这种控制方式提供两个离散的工作频率,通过检测负载的变化,使电路在两个频率之间切换,从而实现PFM控制。这种控制方式简单、易于实现,轻负载时效率高,频谱分布有规律。在Boost变换器上实现了这种控制方式。该电路应用UMC 0.5μm CMOS工艺设计,经Hspice仿真验证,达到设计目标。 A pulse frequency modulation （PFM） with discrete frequency is designed. Unlike conventional PFM, this modulation supplies only two frequencies and automatically switches frequency when changes in load are sensed. The modulation has a simple structure, high efficiency in light load and regular distribution of spectrum. A control circuit with this modulation is implemented on a Boost converter. The circuit is designed based on UMC＇s 0.5μm CMOS process, and its performance has been verified by Hspice simulation.
作者 石刚 唐圣兰 罗萍
机构地区 电子科技大学微电子与固体电子学院
出处 《微电子学》 CAS CSCD 北大核心 2006年第3期304-306,共3页 Microelectronics
基金 国家自然科学基金资助项目(60436030)
关键词 离散频率 脉冲频率调制 效率 频谱分布 Discrete frequency PFM Efficiency Spectrum distribution
分类号 TN787 [电子电信—电路与系统]
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参考文献4

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二级参考文献6

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共引文献16

同被引文献18

  • 1罗萍,李肇基,熊富贵,陈光.PSM开关变换器的平均模型与特性分析[J].电工技术学报,2005,20(3):19-23. 被引量：17
  • 2王斌,王颢雄.随机调制技术与频率抖动技术抑制传导EMI的比较[J].三峡大学学报（自然科学版）,2005,27(4):314-317. 被引量：5
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  • 10Wang Jinping, Xu Jianping. Peak current mode bifre-quency control technique for switching DC-DC convert-ers in DCM with fast transient response and low EMI[J]. IEEE Transactions on Power Electronics, 2012,27(4): 1876-1884.

引证文献3

二级引证文献9

微电子学
2006年 第3期

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