On the use of current control scheme for switched-capacitor DC/DC converters

被引：31

作者：

Chung, HSH ^{[1
]}

Hui, SYR ^{[1
]}

Tang, SC ^{[1
]}

Wu, A ^{[1
]}

机构：

[1] City Univ Hong Kong, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2000年 / 47卷 / 02期

关键词：

DC/DC power conversion; switched capacitor circuits; switched circuits; switched-mode power supplies;

D O I：

10.1109/41.836338

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents an investigation into the use of a current control scheme (CCS) and a comparison with a classical switching scheme for switched-capacitor (SC) step-down dc/dc converters. With the CCS, capacitors are charged with near-constant current, controlled by the gate-source voltage of MOSFET's. By paralleling two SC cells, the converter input current becomes continuous, resulting in much reduced conducted electromagnetic interference with other circuits fed by the same power supply. All MOSFET's are operated for half of the switching period, in order to improve the regulation capability. Static and dynamic behaviors of the converter with the CCS are predicted and confirmed in an experimental 36-W 12-V/9-V prototype.

引用

页码：238 / 244

页数：7

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