Abstract
A lower power consumption, smaller output ripple and better regulation boost power converter controlled by voltage feedback and pulse-width modulation (PWM) mode is implemented in this paper. The over-current protection and soft-start circuit can produce a slowly rising output voltage without extra clock or any external component to prevent inrush current and output voltage overshoot during the start-up period of the converter. The converter is designed and simulated using the TSMC 0.35μm 2P4M CMOS Process. Hspice simulation results show that, the boost converter having chip size with power efficiency about . This chip can operate with input supply voltage from to , and its output voltage can stable at and less than ripple voltage at maximum loading current . The simulation shows the circuit has about of soft-start time and can inhibit the inrush current when the power on.
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