A battery-connected 24-ratio switched capacitor PMIC achieving 95.5%-efficiency
A battery-connected 24-ratio switched capacitor PMIC achieving 95.5%-efficiency
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A%20电池连接%2024-比率%20开关%20电容%20PMIC%20实现%2095.5%-效率
DOI：
10.1109/vlsic.2015.7231315
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
P. Mercier
中科院分区：
文献类型：
--
作者：
Loai G. Salem;P. Mercier
提出了一种开关电容（SC）PMIC，该PMIC仅用5个飞跨电容就可实现高达6.6位的分辨率。飞跨电容器在频率缩放齿轮系以及电荷反馈SC拓扑中被重新使用，以实现与现有技术相比电容器数量减少2.4倍。在0.25μm的体积中，PMIC从2.5-5V的输入电压工作，可以产生范围从0.2- 2 V的输出电压，并且在整个范围内具有90.2%的平均效率和95.5%的峰值效率。
A switched-capacitor (SC) PMIC is presented that achieves up to a 6.6-bit resolution with only 5 flying capacitors for inductive PMIC replacement. The flying capacitors are reused in a frequency-scaled gear train as well as charge-feedback SC topologies to attain a 2.4× reduction in capacitors number compared to prior art. In 0.25μm bulk, the PMIC operates from an input voltage of 2.5-5V, can generate an output voltage ranging from 0.2-2V, and features an average efficiency of 90.2% across the entire range and a peak efficiency of 95.5%.