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As current-mode conversion increases in popularity, several peculiarities associated with fixed-frequency, peak-currentdetecting schemes have surfaced These include instability above 50% duty cycle, a tendency towards subharmonicoscillation, non-ideal loop response, and an increased sensitivity to noise. This paper will attempt to show that theperformance of any current-mode converter can be improved and at the same time all of the above problems reduced oreliminated by adding a fixed amount of “slope compensation” to the sensed current waveform.
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