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Ripple-based constant on-time (RBCOT) control has found applications because of its fast load transient response, small component count, and good light-load efficiency. However, this control scheme often encounters instability issue of subharmonic oscillation when ceramic capacitors are used for converter output filter capacitors. In the paper, a novel RBCOT control with virtual inductor current ripple...
A current-balancing loop is often used in a voltage-mode multiphase interleaved voltage regulator (VR). It serves not only to balance the phase current but also to suppress the beat-frequency phase current oscillation in driving high-frequency dynamic loads such as recent central processing units (CPUs). In this paper, models were developed to predict the control characteristics of both the functions...
In recent years, single-inductor dual-output (SIDO) converters have found applications in hand-held electronic devices. The focus of the paper is about the modeling and the design of the feedback control loop for a voltage-mode SIDO buck converter working in continuous conduction mode. A small-signal model was developed and verified by simulations and experimental results. This model is practically...
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