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A Systematic Approach to Frequency Compensation of the Voltage Loop in Boost

Venable’s K-factor method is a systematic procedure that allows designers to compensate the error amplifier in feedback loops of control systems to achieve the desired bandwidth and phase margin. This approach is of general use and can be applied to PFC pre-regulators as well. In this paper, a slightly different algorithm to Venable’s original version is proposed, tailored to the particular characteristics of PFC pre-regulators.