Abstract
A lower power consumption, smaller output ripple and better regulation current-mode CMOS buck power converter with a novel on-chip soft-start circuit for feedback control 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 0.18μm MM/RF 1P6M SALICIDE 1.8V/3.3V CMOS process. Hspice simulation results show that, the buck converter having 1.129 1.200mm2 chip size with power efficiency about 90%. This chip can operate with input supply voltage from 2.8V to 3.3V , and its output voltage can stable at 1.2V and less than 22mV ripple voltage at maximum loading current 500mA. The simulation shows the circuit has about 1.0ms of soft-start time and can inhibit the inrush current when the power on.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: DEStech Transactions on Environment, Energy and Earth Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
