Development of DC/DC regulators based on switched-capacitor circuits

Author

Chung, Henry S H

Author_Institution

Dept. of Electron. Eng., Hong Kong Polytech., Kowloon, Hong Kong

Volume

5

fYear

1999

fDate

1999

Firstpage

210

Abstract

Design and analysis of n-stage switched-capacitor (SC)-based step-up DC/DC regulators using a current control scheme to adjust the charging trajectory of the capacitors are presented. Operation characteristics of the converter, including the maximum attainable output voltage and the selection of capacitor value, are investigated. By using the representative third-order state space model, static and dynamic behaviors and the closed loop transfer function are derived. A prototype of 30 W, 5 V/12 V, 2-stage converter has been built. Theoretical predictions are favorably verified with experimental measurements

Keywords

DC-DC power convertors; electric current control; nonlinear network analysis; nonlinear network synthesis; state-space methods; switched capacitor networks; transfer functions; voltage regulators; 12 V; 30 W; 5 V; DC/DC regulators; capacitor value selection; charging trajectory adjustment; closed loop transfer function; current control scheme; dynamic behavior; maximum attainable output voltage; n-stage SC-based step-up regulators; operation characteristics; static behavior; switched-capacitor circuits; third-order state space model; Current control; DC-DC power converters; MOSFET circuits; Prototypes; Pulse width modulation; Regulators; Switched capacitor circuits; Switches; Switching circuits; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on

Conference_Location

Orlando, FL

Print_ISBN

0-7803-5471-0

Type

conf

DOI

10.1109/ISCAS.1999.777547

Filename

777547