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Digital and analog hybrid control of multiphase power modules with low output-voltage and high output-current

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6 Author(s)
Yeh, C.Y. ; Dept. of Electr. Eng., Nat. Cheng-Kung Univ., Tainan ; Yang, L.S. ; Liang, T.J. ; Lin, R.L.
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In this paper, a digital and analog hybrid control of multiphase power-modules with low output-voltage and high output-current are presented. The topology of each power module is a current-fed push-pull converter. The front stage is a buck converter which is used to regulate the output voltage and the rear stage is a push-pull converter with the electrical isolation and voltage step-down function. The advantages of the hybrid controllers are fast load transient response, flexible control, high reliability, and high power density. Finally, three paralleled power-modules with 2.5 V/150 A output is implemented. Experimental results show that good output-voltage regulation, current-balance, and high efficiency can be achieved.

Published in:

Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on

Date of Conference:

17-20 Oct. 2008