Correlation-based system identification of digitally controlled SMPS

This paper presents a design procedure using the correlation-based identification to determine the compensation coefficients. A method for verifying the compensation coefficients is also proposed. That solved the open-loop frequency response of digitally controlled switched-mode power supply is difficult to accurately measure and provided a method to test the function of digital compensators. Experimental results show that the open-loop and closed-loop frequency responses obtained using the correlation-based identification method are close to the measured frequency responses.