Title :
Power management architecture for universal input Ac-Dc adapter support in battery powered applications
Author :
Ahsanuzzaman, S.M. ; Blackman, Justin ; Peretz, Mor Mordechai ; Prodic, Aleksandar
Author_Institution :
ECE Dept., Univ. of Toronto, Toronto, ON, Canada
Abstract :
This paper introduces a novel power management architecture for battery powered portable applications, where ac-dc power adapters are used to charge the battery. The flyback-based system allows independent regulation of output bus voltage, irrespective of adapter output, and battery cell voltages. This architecture creates the flexibility to use a wide range of adapters to power the device while charging the battery cells. The effectiveness of the introduced architecture is verified on a 20-W, 100 kHz experimental prototype. Experimental results demonstrate tight output bus voltage regulation over a wide range of adapter-provided dc inputs and smooth transitions between adapter and battery powered modes of operation.
Keywords :
AC-DC power convertors; battery chargers; battery management systems; secondary cells; voltage control; ac dc power adapters; adapter output; battery cell voltages; battery cells; battery powered portable applications; flyback based system; frequency 100 kHz; independent regulation; output bus voltage regulation; power 20 W; power management architecture; universal input ac dc adapter support; Batteries; Computer architecture; Equations; Flyback transformers; Inductance; Switches; Voltage control; Converter circuit; DC power supply; High frequency power converter; Power management; Switched-mode power supply;
Conference_Titel :
Power Electronics and Applications (EPE), 2013 15th European Conference on
Conference_Location :
Lille
DOI :
10.1109/EPE.2013.6632009
