Title :
Bi-directional integrated charge pumps
Author :
Chan, Chit-Sang ; Ki, Wing-Hung ; Tsui, Chi-ying
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China
Abstract :
A bi-directional switched-capacitor power converter that converts 1.8V to 4.5V from the low voltage (LV) port to the high voltage (HV) port and 4.5V back to 1.8V from the HV port to the LV port is proposed. Each port voltage can be regulated using technique of switching low dropout regulator when it serves as the output. The converter is designed using an AMS 0.6 μm n-well process. Simulation results show that each output delivers a maximum load current of 100 mA with good line and load regulation. The efficiencies are 81% for the step-up case and 72% for the step-down case
Keywords :
DC-DC power convertors; switched capacitor networks; transient response; voltage regulators; 0.6 micron; 1.8 V; 100 mA; 4.5 V; 72 percent; 81 percent; AMS; HV port; LV port; bi-directional integrated charge pumps; load current; load regulation; low dropout regulator; n-well process; step-down efficiencies; step-up efficiencies; switched-capacitor power converter; Bidirectional control; Capacitors; Charge pumps; Low voltage; Magnetic devices; Magnetic switching; Power engineering and energy; Regulators; Switches; Switching converters;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Conference_Location :
Phoenix-Scottsdale, AZ
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010352
