Title :
Switched-capacitor power converters with integrated low dropout regulators
Author :
Chen, Wei ; Ki, Wng Hung ; Mok, Phirip K T ; Chan, Mansun
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China
Abstract :
A dual-cell switched-capacitor power converter with output PMOSs serving as pass transistors of a low drop-out regulator (LDR) is presented. Dual-loop feedback compensation with capacitor multiplier is employed. This switching LDR is fabricated using a 0.6 μm AMS CMOS process. With an input voltage of 1.8 V, a regulated output voltage of 3 V is obtained, achieving an efficiency of 81% when driving a load of 100 mA at an equivalent switching frequency of 460 kHz
Keywords :
CMOS analogue integrated circuits; DC-DC power convertors; circuit feedback; compensation; power integrated circuits; switched capacitor networks; switched mode power supplies; voltage regulators; 0.6 micron; 1.8 V; 100 mA; 3 V; 460 kHz; 81 percent; AMS CMOS process; capacitor multiplier; charge pumps; doubler switching LDR; dual cell SC power converters; dual-loop feedback compensation; integrated low dropout regulators; output PMOS devices; pass transistors; switched-capacitor power converter; Capacitors; Charge pumps; Feedback; Filtering; Frequency; Pulse width modulation; Regulators; Switches; Switching converters; Voltage;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921305
