Design of Single Input Multiple Output Full Bridges DC-DC Converters For Personal Computer Power Supply

Nowadays, the usage of electrical energy is mostly still using AC voltage. Nevertheless, almost all electronic equipment requires a direct current (DC) source for their operation, including the personal computer (PC). PCs are electronic devices that are widely used, and it commonly employs AC input source. In this study, PC will be supplied with DC input source i.e. batteries. As PC utilizes 3 different DC voltage supplies (12V, 5V, and 3.3V), therefore for this purpose, a Single Input - Multiple Output DC-DC converter for PC power supply is designed using full bridged topology and simulated by using Proteus ISIS software. The result showed that the error between simulated and developed design for +3.3V output voltage was 3.94%; for +5V output voltage was 2.94%; for +12V output voltage was 1.23%, and for -12V output voltage was 2.35%. Moreover, the efficiency of developed DCDC converter during starting, operating and standby modes was 61.88%, 60.15%, and 54.15% respectively. Therefore, using this developed DC-DC converter for PC power supply, the PC could be run with any DC sources.