A Fully-Integrated Efficient Power Management System for Micro-Scale Biomedical Applications

被引：0

作者：

Kamel, Mahmoud H. ^{[1
,2
]}

Abdelmagid, Basem A. ^{[1
]}

Mohieldin, Ahmed N. ^{[1
]}

机构：

[1] Cairo Univ, Fac Engn, Elect & Elect Commun Dept, Giza 12613, Egypt

[2] Minia Univ, Fac Engn, Elect Engn Dept, Al Minya, Egypt

来源：

2020 IEEE 29TH INTERNATIONAL SYMPOSIUM ON INDUSTRIAL ELECTRONICS (ISIE) | 2020年

关键词：

Power management; reconfigurable DC-DC converter; fractional conversion ratio; boost converter; switched-capacitor (SC); CHARGE-PUMP; CIRCUITS;

D O I：

10.1109/isie45063.2020.9152496

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents a fully integrated power management system suited for biomedical implanted devices. The proposed system employs a reconfigurable capacitor-based step-up DC-DC converter. The proposed DC-DC converter can provide fractional voltage conversion ratio (VCR) in a step of 0.25 to support wide input range from 0.4-1.2 V providing a constant output voltage of 1.6 V. The system efficiency is optimized using a real-time monitoring for the input current supplied to the DC-DC converter. This allows the system, using a control sequence, to adaptively optimize the number of stages and switching frequency that will provide the required constant output voltage while maintaining optimum efficiency. The proposed system is designed using a 180nm CMOS technology. Simulation results show that the proposed system provides peak efficiency of 78.1%.

引用

页码：394 / 399

页数：6

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