High-Efficiency Step-Down Multi-Mode Switching DC-DC Converter for IoT Devices

Hsiang Ming Yen, Chia Ling Wei, Chi Shi Chen, Terng Yin Hsu

研究成果: Conference contribution同行評審

摘要

A step-down multi-mode switching DC-DC converter for battery-powered portable IoT products is proposed, and it was implemented by using a 0.35-μm CMOS mixed-signal 2P4M polycide 5V/3.3V process. The load capacitor at converter output can be removed from the dynamic circuit which helps during transients. The output stage is designed with both the static and dynamic controls to suppress the possible large overshoot/undershoot voltage during load change. Moreover, a novel adaptive switching frequency (ASF) technique is also proposed in this work to optimize the converter performance at different input voltages. There are three operational modes in the proposed regulator, and, thus, a wide input voltage range, 2.1-5 V, is achieved. The output voltage is set to 1.8 V, and the maximal load current is 100mA. The measured conversion efficiency may go up to 87.6%.

原文English
主出版物標題Proceedings - 32nd IEEE International System on Chip Conference, SOCC 2019
編輯Danella Zhao, Arindam Basu, Magdy Bayoumi, Gwee Bah Hwee, Ge Tong, Ramalingam Sridhar
發行者IEEE Computer Society
頁面449-454
頁數6
ISBN(電子)9781728134826
DOIs
出版狀態Published - 九月 2019
事件32nd IEEE International System on Chip Conference, SOCC 2019 - Singapore, Singapore
持續時間: 3 九月 20196 九月 2019

出版系列

名字International System on Chip Conference
2019-September
ISSN(列印)2164-1676
ISSN(電子)2164-1706

Conference

Conference32nd IEEE International System on Chip Conference, SOCC 2019
國家Singapore
城市Singapore
期間3/09/196/09/19

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