Abstract:This paper proposes an analysis of the active charge injection for a resonant power supply noise by controlling the number of canceling capacitors so that the core supply voltage does not become lower than the voltage at the beginning of the canceling charge injection. Based on this analysis, we propose a circuit that injects adequate amount of charge in accordance with the injection time and the amount of the voltage drop whose code comes from an on-chip voltage drop detector. The proposed circuit is composed… Show more
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