| 低功耗无损电流检测技术的分析与设计 |
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| 引用本文： | 刘布民,蔡伟,陆铁军,王宗民. 低功耗无损电流检测技术的分析与设计[J]. 电子科技大学学报(社会科学版), 2008, 0(3) |
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| 作者姓名： | 刘布民 蔡伟 陆铁军 王宗民 |
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| 作者单位： | 电子科技大学微电子与固体电子学院;北京微电子技术研究所;北京微电子技术研究所 成都;北京丰台区; |
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| 摘 要： | 通过分析DC-DC电流模开关电源的结构,提出了一种新颖的低功耗无损电流检测技术,降低了开关电源的静态功耗。该技术实现了虚拟的无损电流检测电阻和一个低功耗高灵敏度的电流检测放大器。通过降低电流检测电路的功耗,优化了电流模开关电源控制环路的功耗,从而实现了静态功耗的最小化。基于无损电流检测技术设计,开关电源的静态功耗为61.22mW,为典型情况的57.5%。
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| 关 键 词： | 电流模 开关电源 无损电流检测 低功耗电流检测 寄生电阻 |
Low-Power Lossless Current Sensing in DC/DC Converter |
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| LIU Bu-min,CAI Wei,LU Tie-jun,, WANG Zong-min. Low-Power Lossless Current Sensing in DC/DC Converter[J]. Journal of University of Electronic Science and Technology of China(Social Sciences Edition), 2008, 0(3) |
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| Authors: | LIU Bu-min CAI Wei LU Tie-jun WANG Zong-min |
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| Affiliation: | LIU Bu-min1,CAI Wei2,LU Tie-jun2,, WANG Zong-min2 (1. School of Microelectronics , Solid-State Electronics,University of Electronic Science , Technology of China Chengdu 6100541,2. Beijing Microelectronics Technology Institute Fengtai Beijing 100076) |
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| Abstract: | By analyzing the architecture of current mode DC-DC converter, a novel lossless low-power current-sensing technique for minimizing the static power of DC-DC converter is proposed in the paper. It adopts a lossless current-sensing method and an improved low power current amplifier. The proposed technique can reduce the power of current-sensing circuit and result in the static power optimization of current mode DC-DC converter. Simulation results show that static power of the current mode buck converter based... |
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| Keywords: | current-mode DC-DC lossless current-sensing low power current-sensing parasitic resistor |
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