电子科技Issue(9)：70-73,4.DOI:10.16180/j.cnki.issn1007-7820.2015.09.019
一种片内集成飞电容的自适应开关电容 DC -DC
An Auto-reconfigurable Switched-capacitor DC-DC with On-Chip Fly-Capacitor
摘要
Abstract
A high-efficiency boost mode electronic power management chip with on-chip capacitor is proposed. Compared to the conventional structure, the presented circuit has 11 patterns: six groups of 2 ×, 3 groups of 3 ×, and 2 groups of 4 × booster modes.It also has the advantage of low-ripple and so on.The chip size is greatly re-duced by using MIM capacitance and accumulation NMOS capacitance in series, which increases the capacity value per unit area.The proposed circuit is implemented using SMIC 0.18 μm CMOS process.The Cadence simulation results show that the efficiency is up to 83.6% when the output voltage is 3 V.When the switching frequency is 20 MHz with the input voltage from 1 V to 1.8 V, the area of overall capacitor integrated on chip is 900 μm × 900 μm and the output ripple is less than 40 mV.关键词
DC-DC/高效率/集成电容Key words
DC-DC/high-efficiency/on-chip capacitor分类
信息技术与安全科学引用本文复制引用
魏榕山,代明..一种片内集成飞电容的自适应开关电容 DC -DC[J].电子科技,2015,(9):70-73,4.基金项目
国家自然科学基金资助项目 （）
