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Digital current mode control approach for the parallel module DC-DC converters

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2 Author(s)
Bohyung Cho ; Dept. of Electr. Eng., Seoul Nat. Univ., Seoul ; Hyunsu Bae

This paper presents the digital current mode control employing nonlinear resistive current mode control and digital state feedback control using the pole placement technique for parallel interleaved DC-DC converters. The former method achieves current sharing by converting the effective input characteristic of the converters seen by the source to a resistive load sink. The latter method derives the discrete state feedback controller structure for robust tracking control using the error state. For the design example of the two control scheme, a prototype hardware system with two 100 W parallel module buck converters with a TMS320F2812 DSP has been built and tested.

Published in:

Power Electronics, 2007. ICPE '07. 7th Internatonal Conference on

Date of Conference:

22-26 Oct. 2007