A DC---DC buck converter with load-regulation improvement using dual-path-feedback techniques

Authors:
Jiann-Jong Chen;Jui-Hsuan Hsu;Yuh-Shyan Hwang;Cheng-Chieh Yu
Affiliations:
Department of Electronic Engineering, National Taipei University of Technology, Taipei, Taiwan 106;Department of Electronic Engineering, National Taipei University of Technology, Taipei, Taiwan 106;Department of Electronic Engineering, National Taipei University of Technology, Taipei, Taiwan 106;Department of Electronic Engineering, National Taipei University of Technology, Taipei, Taiwan 106
Venue:
Analog Integrated Circuits and Signal Processing
Year:
2014

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Abstract

A DC---DC buck converter using dual-path-feedback techniques is proposed in this paper. The proposed converter is fabricated with TSMC 0.35 μm DPQM CMOS process. The structure of the proposed buck converter includes the voltage-feedback and current-feedback design to improve load regulation and achieve high efficiency. The experimental results show the maximum power efficiency is about 94 %. The load regulation is 6.22 (ppm/mA) when the load current changes from 0 to 300 mA. With a 3.6 V input power supply, the proposed buck converter provides an adjustable power output with a voltage range is from 1 to 3 V precisely.