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박우철,김창선 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-
We considered about the efficiency of the Buck+Half bridge converter. The converter provides the effective applications for a low output voltage, a high output current and a wide input voltage. Developed the Buck+Half Bridge converter ratings are of 36~72V input and 3.3V/30A output. In Half Bridge converter, the 86~96.4% of the efficiency is measured at 100kHz switching frequency with PQI core. In the case of the synchronized Buck+Half Bridge converter, the measured efficiency is higher than that of the unsynchronized coverter. In the synchronized Buck+Half Bridge, the maximum efficiency is up to 92.3% with PQI core at 100kHz, 7A output.
전준석,박우철,김창선 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-
The push pull forward converter is a very suitable circuit for low output voltage, high output current applications with a wide input voltage range. All the magnetic components (output inductor, transformer, input filter) can be integrated into a single core. The integrated magnetics can reduce the number of the magnetic components. Developed the push pull forward converter rating are of 36~72V input and 3.3V/30A output. In this converter, the efficiency was measured by 76.4% at full load and 82.95% at half load. The maximum efficiency is up to 83.% at 200kHz switching frequency, 11A output.