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This paper presents a universal method for modeling the frequency response of comparators in switch- mode controllers. As the main non-linearity in most switch- mode controllers, understanding the comparator is the key to understanding the system. Based on discrete-time modeling, the proposed method is demonstrated to allow very precise predictions of comparator frequency response in a variety of...
This paper presents a new digital self-oscillating modulator (DiSOM) for DC/DC converters. The DiSOM modulator allows the digital control algorithm to sample the output voltage at a sampling frequency higher than the converter switching frequency. This enables higher control loop bandwidth than for traditional digital PWM modulators given a certain switching frequency. A synchronised version of the...
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