A high-efficiency hysteresis buck converter using auto selectable frequency-locked techniques

2013 IEEE International Conference of Electron Devices and Solid-state Circuits Pub Date : 2013-06-03 DOI:10.1109/EDSSC.2013.6628215

Tse-Hsu Wu, Jiann-Jong Chen, Yuh-Shyan Hwang

引用次数: 1

Abstract

A high-efficiency wide workload hysteresis buck converter using auto selectable frequency-locked techniques is designed with the TSMC 0.18-μm 1P6M process. The proposed buck converter yields fast-response by using hysteresis control. The workload range, power efficiency, and EMI noise problem are improved by auto-selectable frequency and frequency-locked techniques. The selected switching frequency is determined with load current. Simulation results show that this buck converter's switching frequency is locked at four frequencies for the load current between 10 and 400mA: 250k, 500k, 1M, and 2MHz. Furthermore, it achieves more than 90% power efficiency over 95% of the load range, with a peak efficiency of 96.27%.

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采用自动可选锁频技术的高效磁滞降压变换器

采用台积电0.18-μm 1P6M工艺，设计了一种采用自动可选锁频技术的高效宽工作负载迟滞降压变换器。该降压变换器采用迟滞控制，具有快速响应能力。通过自动选择频率和锁频技术，工作负载范围、功率效率和EMI噪声问题得到了改善。选择的开关频率由负载电流决定。仿真结果表明，在负载电流10 ~ 400mA范围内，该降压变换器的开关频率锁定在250k、500k、1M和2MHz四个频率。在95%的负载范围内，功率效率达到90%以上，峰值效率达到96.27%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2013 IEEE International Conference of Electron Devices and Solid-state Circuits

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