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Recently, V2 constant on-time control has been widely used to improve light-load efficiency. In the V2 implementation, the nonlinear PWM modulator is much more complicated than usual, since not only is the inductor current information fed back to the modulator but also the capacitor voltage ripple information. Generally speaking, there is no subharmonic oscillation in constant on-time control. However,...
Behaviors of loop-gain functions and other control transfer functions are critically important in the design of current-mode DC/DC converters. In this paper, procedures were proposed to use SIMPLIS to simulate the two loop gain functions T1 and T2, the equivalent control plant transfer function when the inner loop is closed Fin, current loop gain Ti and voltage loop gain Tv. These models are practical...
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