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This paper presents a new method of addressing the constant on time and minimal off time limitation of widely used COT variable frequency control. This is done by means of estimated capacitor current feedforward method. Ultrafast transient response is achieved with a new COT controller reacting much faster to output caps charge and discharge currents following a load transient step. A new output caps...
A transient-voltage-clamp (TVC) circuit acts as a replacement of bulk capacitors, which is required for voltage regulator (VR) module (VRM) to clamp output voltage spikes. With the TVC circuit, VRM size is greatly reduced with similar transient performance. This paper presents a new TVC circuit. This TVC circuit is designed based on the constant load line impedance which is recently given by Intel's...
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