The study on the effect of voltage ripple on multiphase buck converters with phase shedding control scheme for SCADA applications

Voltage regulator modules (VRM) need to have low output voltage ripple and tight efficiency power advanced microprocessors. This paper explains a phase shedding technique enhance its impact on ripple. In this study, analysis was done 4-phase buck converter which is having an input of 45-65 V delivers 9 V, 12A with switching frequency 200Khz. The control scheme suitable for applications such as sources programmable logic controllers, part SCADA systems, requires high current supply. Working multiphase modelled verified using Matlab/Simulink software. simulation results show the effect in varying load conditions increase at output.