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Flat Transformer를 이용한 100W급 On-Board Powr Supply
황치면(C. M. Hwang),송두익(D. T. Song),조정구(J. G. Cho),정창용(C. Y. Jeung),홍승대(S. D. Hong),하태복(T. B. Ha) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
High power density on-board power supply is implemented by using flat transformer. In the high frequency switching converters, large leakage inductance increases the switching stress and duty cycle loss, which sometimes limits maximum switching frequency. The flat transformer is designed by using special core structure, which has very low profile and low temperature rise since the thermal loading is spread evenly over a larger area. lOOW, 3.3V output on board supply is built and tested and 5O.7W/inch³ power density is achieved.