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Asymmetrical leading-triangle modulation technique for improved digital valley current controlled switching DC-DC converters

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5 Author(s)
Guohua Zhou ; Sch. of Electr. Eng., Southwest Jiaotong Univ., Chengdu, China ; Jianping Xu ; Fei Zhang ; Ming Qin
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Conventional leading-triangle modulation is essentially a symmetrical leading-triangle modulation. To overcome the subharmonic oscillations of improved digital valley current (IDVC) controlled switching dc-dc converters with symmetrical leading-triangle modulation, asymmetrical leading-triangle modulation technique for IDVC controlled switching dc-dc converters is studied in this paper. The subharmonic oscillations of IDVC control with symmetrical leading-triangle modulation can be avoided with asymmetrical leading-triangle modulation. Experimental results show that the control performance of IDVC controlled switching converters with asymmetrical leading-triangle modulation is better than that with symmetrical leading-triangle modulation.

Published in:

Energy Conversion Congress and Exposition (ECCE), 2010 IEEE

Date of Conference:

12-16 Sept. 2010