Abstract
In this paper, the digital controller design for compensating the dc-dc buck converter output voltage has been analyzed in the digital domain. The main idea of this paper is patterning the samples of high order ideal controller and using integral square error in determining digital PID coefficients. This approach provides higher precision of digital controller design and eliminates the need for manipulating the coefficients, which in turn will lead to stringent design parameters in response to the system output. The proposed scheme has been simulated in MATLAB software and the results have been presented. The digital controller has been designed based on the proposed method for the buck converter and has been implemented on a TMS320LF2812 DSP core.
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