A 48 V 100 A switching power supply unit and its application

Abstract

It is shown that the 48 V, 100 A switching power supply unit possesses excellent characteristics including compactness, light weight, high efficiency, and a high power factor. It is also shown that by combining the power supply with a CPU-controlled monitor, it is possible to configure an uninterruptible power supply system for communications which has extremely high operability and reliability. This monitor has various control and display functions such as control of the number of operating units in accordance with the load current, the calculation and indication of residual battery capacity, and charging control based on residual capacity.<>