buck调节器的自偏置全量程电流传感器

2016 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS) Pub Date : 2016-10-01 DOI:10.1109/APCCAS.2016.7803903

Chundong Wu, W. Goh, Wei Mao, Lei Wang, Yat-Hei Lam, Alan Chang, Y. Lian

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引用次数: 3

摘要

介绍了一种基于自偏置结构的全量程电流传感器。所提出的全量程电流传感器可以在输入电流从50 mA到500 mA之间变化的情况下，在同一开关周期内从功率调节器的高侧和低侧开关感应电流。传感精度在95%以上，功耗小于总输入功率的1%。所有仿真结果均基于0.18μm CMOS工艺。

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A self biased full range current sensor for buck regulator

A full range current sensor based on self-bias structure for buck regulator is presented in this paper. The proposed full range current sensor can sense current from both the high side and low side switches of the power regulator within the same switching cycle with input current varying from 50 mA to 500 mA. It has higher than 95% sensing accuracy while consuming less than 1% of the total input power. All the simulation results are based on 0.18μm CMOS process.

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2016 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)

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