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- W4387010509 abstract "In this paper, a novel digital dual-loop interleaving control algorithm is proposed for an asymmetric multiphase Buck converter to further enhance the transient response under the large load step and ultra-fast slew rate. The proposed dualloop consists of a novel nonlinear average current loop and a digital integration constant on-time (DICOT) controlled voltage loop which are interleaving connected. The normal phases with average current control aim to deliver the majority of power while the auxiliary phases with DICOT control are designed to regulate the output voltage and for the fast transient response. With the interleaving control approach, the average inductor current of auxiliary phases remains unchanged in a steady state under different load conditions and that of normal phases follows the load current level. Compared to existing researches, the proposed digital dual-loop interleaving control has robust operation in auxiliary phases and flexibility control of normal and auxiliary phases, as well as the simple hardware implementation. The proposed algorithm is constructed in FPGA and is applied on the 8 phases asymmetric Buck system, the maximum load step of 250A with the current slew rate of 1200A/μs is tested, the undershoot and overshoot are 30mV and 41mV respectively, and the recovery times are around 20μs." @default.
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- W4387010509 date "2023-01-01" @default.
- W4387010509 modified "2023-09-26" @default.
- W4387010509 title "Digital Dual-Loop Interleaving Control Algorithm for Asymmetric Multiphase Buck Converter with UltraFast Load Transient" @default.
- W4387010509 doi "https://doi.org/10.1109/tpel.2023.3318796" @default.
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