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A charge pump with excellent current matching and negligible current variation characteristics over wide output voltage dynamic range is proposed, which is simulated in the 0.18µm standard CMOS process with the power supply 1.8V. The proposed charge pump circuit improves current matching by applying a high gain operational trans-conductance amplifier. Negligible current variation is achieved by inducing...
Effective protection circuits for high power step-down converter are presented in this paper to protect the converter from damage under any fault condition. A novel built-in soft-start circuit with simple topology is implemented by controlling the input reference voltage of error amplifier to eliminate the inrush current and avoid the overshoot of the output voltage without using external capacitor,...
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