Title :
Digital dead-time control for two phase double-ended forward converter
Author :
Yonezawa, Yoshiyuki ; Nakao, Hayato ; Sasaki, T. ; Nakashima, Yuta ; Maruyama, Tetsuhiro
Author_Institution :
Fujitsu Labs. Ltd., Kawasaki, Japan
Abstract :
Two phase double-ended forward converter is suitable for more than 2kW high efficiency power supply by the feature of low surge voltage. One issue of the converter is dead-time loss of synchronous rectifier FETs. In this paper, we propose a precise digital dead-time control method for a 2.5 kW (12 V / 208 A) output power supply. Proposed method is confirmed by experiment and theoretical analysis that the method reduces the 6 W loss at half load.
Keywords :
digital control; field effect transistors; power convertors; rectifiers; current 208 A; dead-time loss; digital dead-time control method; high efficiency power supply; low surge voltage; power 2.5 kW; synchronous rectifier FET; two phase double-ended forward converter; voltage 12 V; Delays; Equations; Field effect transistors; Immune system; Logic gates; Rectifiers; Switches;
Conference_Titel :
Power Electronics and Drive Systems (PEDS), 2013 IEEE 10th International Conference on
Conference_Location :
Kitakyushu
Print_ISBN :
978-1-4673-1790-0
Electronic_ISBN :
2164-5256
DOI :
10.1109/PEDS.2013.6527192
