This paper presents a high power supply rejection ratio (PSRR) and a method to achieve stability for low-dropout (LDO) regulators, an essential system-on-chip (SoC) component. The feedforward method improves the PSRR in the LDO regulator by adjusting the output voltage with a compensation signal which is proportional to the power supply noise. Also, the proposed current sensing is incorporated into the LDO regulator
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Kim et al. (2024) studied this question.
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