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Study of Dynamic Response of DC-DC Buck Converter Based on PID Controller

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Document pages: 5 pages

Abstract: In everyday life, dc-c Buck converter is used to provide a required amount of dc voltage for regular uses like mobile, laptop, etc. This DC-DC Buck converter is highly sensitive to change in load means, if the load value change then the converter output also varies. In such a situation, we needed a robust adaptive control system, which will provide satisfactory performance of the buck converter over a widely varying load. This design can execute by proposed a control scheme, which will estimate the error and modified the load output to desire voltage with a least possible time. In this paper the switching frequency is 1 MHz for designing the DC-DC Buck converter circuit. Proposed control design is based on the PID controller which changing its Ki (Integral constant), Kp (proportional constant), Kd (derivative constant) value, for getting require dc voltage. Here we describe the various controlling mode of PID controller for design a robust DC-DC Buck converter.

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