| Title |
Buck and Half Bridge Series DC-DC Converter |
| Keywords |
Low Output Voltage ; High Output Current ; Wide Input Voltage Applications ; Zero Voltage Switching ; Buck And Half Bridge Series DC-DC Converter |
| Abstract |
We considered of the buck and half bridge series DC-DC converter. It has good applications in areas with low voltage/high current, wide input voltage. The buck converter ratings and the half bridge converter ratings are 36 ~72V input and 22V/5A output, 19 ~24V input and 3.3V/30A output, respectively. Developed the buck and half Bridge series DC-DC converter ratings are of 36 ~72V input and 3.3V/30A output. The buck converter is operated with zero voltage switching process to reduce the switching losses. The 80.1 % ~97.6 % of the efficiency is measured at 18.4μH output filter inductance of buck converter. In the half bridge converter, the 86 % ~96.4 % efficiency is measured at 150kHz switching frequency with PQI core. In the case of synchronized the buck and half bridge DC-DC converter, the measured efficiency is higher than that of the unsynchronized converter. In the synchronized converter, the maximum efficiency is measured up to 92.3 % with PQI core at 150kHz. 7A output. |