Average Current Mode Control for LLC Series Resonant DC-to-DC Converters

An average current mode control scheme that consistently offers good dynamic performance for LLC series resonant DC-to-DC converters irrespective of the changes in the operational conditions is presented in this paper. The proposed control scheme employs current feedback from the resonant tank circuit through an integrator-type compensation amplifier to improve the dynamic performance and enhance the noise immunity and reliability of the feedback controller. Design guidelines are provided for both current feedback and voltage feedback compensation. The performance of the new control scheme is demonstrated through an experimental 150 W converter operating with 340 V to 390 V input voltage to provide a 24 V output voltage.

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Cite this article

[IEEE Style]

C. H. Park, S. H. Cho, J. Jang, S. K. Pidaparthy, T. Ahn, B. Choi, "Average Current Mode Control for LLC Series Resonant DC-to-DC Converters," Journal of Power Electronics, vol. 14, no. 1, pp. 40-47, 2014. DOI: 10.6113/JPE.2014.14.1.40.

[ACM Style]

Chang Hee Park, Sung Ho Cho, Jinhaeng Jang, Syam Kumar Pidaparthy, Taeyoung Ahn, and Byungcho Choi. 2014. Average Current Mode Control for LLC Series Resonant DC-to-DC Converters. Journal of Power Electronics, 14, 1, (2014), 40-47. DOI: 10.6113/JPE.2014.14.1.40.