Small-signal model of V/sup 2/ control technique with compensation

The small signal models of V/sup 2/ control without/with slope compensation are derived. It is verified that the loop with compensation can keep stable, even though the duty factor is higher than 0.5. The paper compares V/sup 2/ control with current-mode control. The analysis shows that V/sup 2/ control has much higher DC gain than current-mode control, and, by careful design, V/sup 2/ control can have larger bandwidth than current-mode control. This is why the V/sup 2/ control technique has a faster transient response than current-mode control with load current step change.