Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 18, Issue 4, Pages 946-951Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2003.813758
Keywords
coupled-inductor; dc/dc; full-bridge; isolated boost converter; start-up scheme
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Two new start-up schemes for isolated full-bridge boost converters are proposed in this paper. The control,timing for each scheme, which,is compatible with pulse-width modulated (PWM) control timing for normal boost mode operation, are investigated. Design considerations on the relationship between the turns ratios of the boost choke windings and the main transformer windings, and its effects on the operation of the converter, are studied. The two proposed start-up schemes area experimentally verified on a 1.6 kW, 12 V/288 V prototype.
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