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- W2103456199 abstract "This paper presents a practical injection-based method for continuous monitoring of the crossover frequency and phase margin in digitally controlled switched-mode power supplies (SMPS). The proposed approach is based on Middlebrook’s loop-gain measurement technique [1], adapted to digital controller implementation. A digital square-wave signal is injected in the loop, and the injection signal frequency is adjusted while monitoring loop signals to obtain the system crossover frequency and phase margin online, i.e., during normal SMPS operation. The approach does not require open loop or steady-state SMPS operation and is capable of convergence in the presence of load transients or other disturbances. Experimental results are presented for various power stage configurations demonstrating close matches between monitored and expected crossover frequencies and phase margins." @default.
- W2103456199 created "2016-06-24" @default.
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- W2103456199 date "2008-06-01" @default.
- W2103456199 modified "2023-10-18" @default.
- W2103456199 title "An online phase margin monitor for digitally controlled switched-mode power supplies" @default.
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- W2103456199 doi "https://doi.org/10.1109/pesc.2008.4592037" @default.
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