Small-signal analysis of the phase-shifted PWM converter |
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| Authors: | Vlatkovic V Sabate JA Ridley RB Lee FC Cho BH |
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| Affiliation: | Bradley Dept. of Electr. Eng., Virginia Polytech. Inst & State Univ., Blacksburg, VA; |
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| Abstract: | The specific circuit effects in the phase-shifted PWM (PS-PWM) converter and their impact on the converter dynamics are analyzed. The small-signal model is derived incorporating the effects of phase-shift control and the utilization of transformer leakage inductance and power FET junction capacitances to achieve zero-voltage resonant switching. The differences in the dynamic characteristics of the PS-PWM converter and its PWM counterpart are explained. Model predictions are confirmed by experimental measurements |
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