Title :
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
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;
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
DOI :
10.1109/ISCAS.1999.777547
