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Analysis and implementation of full-bridge converter with current doubler rectifier

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3 Author(s)
B. -R. Lin ; Dept. of Electr. Eng., Nat. Yunlin Univ. of Sci. & Technol., Taiwan, Taiwan ; K. Huang ; D. Wang

A zero voltage switching DC/DC converter is presented, which gives a stable output voltage and high circuit efficiency. In the adopted DC/DC converter, a full-bridge inverter with phase-shift PWM technique is used to achieve zero voltage switching for active power switches and to regulate the output voltage. To increase the converter efficiency at the transformer secondary side, a current doubler rectifier with the property of one diode conduction drop, frequency doubling in the output capacitor and low current rating in the transformer secondary winding are used in the adopted circuit. The detailed circuit operation, mathematical analysis and design example of the converter are presented. The measured full-load efficiency of a 100 kHz experimental prototype was higher than 92%. Experimental results are presented to verify the performance of the adopted circuit.

Published in:

IEE Proceedings - Electric Power Applications  (Volume:152 ,  Issue: 5 )