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Digital Sliding-Mode Controller For High-Frequency DC/DC SMPS

Abstract : Digital control technique is becoming an attractive alternative for high-frequency switching mode power supply (SMPS). This paper introduces a fully synthesizable digital sliding-mode (SM) controller for high-frequency dc/dc SMPS. The proposed SM controller is associated with a digital pulsewidth modulation (DPWM) block to operate at constant and high switching frequency compared to already published approaches. The digital SM controller is experimentally validated by means of field-programmable gate array in a 4-MHz step-down converter with 10-bit analog-to-digital conversion (ADC) and 11-bit DPWM. Measured dynamic performances are superior to conventional digital controllers for dc/dc SMPS.
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Submitted on : Friday, March 25, 2011 - 4:10:37 PM
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Shuibao Guo, Xuefang Lin-Shi, Bruno Allard, Yanxia Gao, Ruan Yi. Digital Sliding-Mode Controller For High-Frequency DC/DC SMPS. IEEE Transactions on Power Electronics, Institute of Electrical and Electronics Engineers, 2010, 25 (5), pp.1120 - 1123. ⟨10.1109/TPEL.2009.2039356⟩. ⟨hal-00519008⟩



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