Title :
Switch-mode multi-power-supply Li-ion battery charger with power-path management
Author :
Lou, Jia-na ; Wu, Xiao-Bo ; Zhao, Meng-lian
Author_Institution :
Inst. of VLSI Design, Zhejiang Univ., Hangzhou, China
Abstract :
A switch-mode Li-ion battery charger is proposed. It is suitable for input power supply of wall adaptor or USB port in modern portable apparatus. When it works under USB port supply, its input current is automatically limited at a presetting value. A power-path management is introduced in to realize charging and power supply simultaneously based on load priority. It also realizes smooth transition from constant current charging to constant voltage charging in switch mode controller. The proposed charger is designed and simulated in TSMC 0.35μm CMOS process and all the simulation results are consistent with expectations well.
Keywords :
CMOS integrated circuits; battery chargers; switched mode power supplies; CMOS process; Li-ion battery chargers; USB port; constant current charging; constant voltage charging; load priority; power-path management; size 0.35 mum; switch mode controller; switch mode multi-power-supply; wall adaptor; Batteries; Power supplies; Sensors; Simulation; Switches; Universal Serial Bus; Voltage control;
Conference_Titel :
Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-5797-7
DOI :
10.1109/ICSICT.2010.5667349
