DC-DC converters are now widely used in low- to medium-power ranges. Since the isolated converters offer input and output isolation as well as protection from input side errors, they are used in medium power applications. In this study, an isolated DC-DC converter is used to power up a digital unit subsystem for a space mission. By operating at a switching frequency of 140 kHz, the suggested converter can use smaller magnetic components. The suggested topology modifies the duty cycle for an input variation using voltage feed forward control. It contains integrated EMI filters to reduce noise comingfrom adjacent components and vice versa. Cross regulation is a difficult challenge to meet, and this is accomplished by keeping the secondary feedback circuit in a stable zone. Hybrid Micro Circuits (HMC), which decrease the size of the converter, are used in the development of a prototype model. More than 65% converter efficiency is the target.