| Buck型DC/DC转换器二次斜坡补偿电路设计 |
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| 引用本文： | 管劲舟,李纪磊. Buck型DC/DC转换器二次斜坡补偿电路设计[J]. 电子科技, 2015, 28(6): 192 |
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| 作者姓名： | 管劲舟 李纪磊 |
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| 作者单位： | (西安电子科技大学 电路CAD研究所,陕西 西安 710071) |
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| 摘 要： | 提出了一种应用于电流型DC/DC转化器的二次斜坡补偿电路的设计,该方法使补偿的斜率随着占空比动态变化,不仅提高了芯片的带载能力以及消除了占空比＞50％时出现的开环不稳定和亚谐波振荡和对噪声敏感等缺点。同时也避免了系统的过补偿和带载能力降低的问题。电路基于TSMC的0.35 μm BCD工艺设计,经Cadence仿真验证,达到设计目标。
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| 关 键 词： | 峰值电流模 斜坡补偿 带载能力 DC/DC转换器 |
Design of a Squarer Slope Compensation Circuit for Buck DC-DC Converter |
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| GUAN Jinzhou,LI Jilei. Design of a Squarer Slope Compensation Circuit for Buck DC-DC Converter[J]. Electronic Science and Technology, 2015, 28(6): 192 |
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| Authors: | GUAN Jinzhou LI Jilei |
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| Affiliation: | (Institute of Electronic CAD,Xidian University,Xi'an 710071,China) |
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| Abstract: | A squarer slope compensation technique is presented for application in the current mode DC/DC converters.The slope compensation changes dynamically with the duty ratio,improving system stability and the chip's loading capacity and eliminating such disadvantages as the instability with duty ratios larger than 50% and the sub harmonic oscillation as well as sensitive noise,The circuit is based on a 0.35 μm BCD process and verified by Cadence simulation.Anticipated results have been achieved. |
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| Keywords: | peak current mode slope compensation loading capacity dc/dc converter, |
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