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A small signal model of primary side regulated (PSR) flyback converter with pulse frequency modulation (PFM) is firstly proposed in this paper. Output cable voltage drop compensation related to switching frequency is considered in the novel model (PFM-PSR model), which has another advantage of fast calculating. Frequency performance of entire loop is discussed with proposed model. A prototype is built...
In order to analyze the high-frequency behaviors of the peak current mode (PCM) Buck converter, a small-signal multifrequency model is proposed. The multifrequency model explains the influences from the sideband frequency components generated by the nonlinear PWM comparator. It can effectively reflect some features which cannot be shown by the conventional average model, such as the phase delay. In...
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