Design and Hardware Implementation of Battery Charge Controller for Telecommunication System

Telecommunication facilities are faced with the challenge of configuring a power supply that supports the network requirements as reliably and economically as possible. The telecommunication equipment generally requires 48VDC input power. Such power systems consist of multiple parallel-redundant rectifiers that convert AC power to required DC power. This power is utilized to charge lead-acid storage batteries and supply power to critical-loads. A charge controller or charge regulator is basically a voltage and/or current regulator to keep batteries from overcharging. It regulates the voltage and current coming from DC source going to the battery and load. This paper presents the improved charge controller for the telecommunication system using microcontroller (Renesas-RL78) based buck converter.