Abstract
DC-DC buck converters with high conversion efficiency are widely used in ultralow power applications. This paper proposes a new method of power metal-oxide-semiconductor field-effect transistors (MOSFETs) size optimization for DC-DC buck converters based on optimum power efficiency. It analyses the power loss of DC-DC buck converters and presents an equation describing the relationship between their power MOSFETs size and their power efficiency. In addition, a method is proposed for optimizing the power MOSFETs size of DC-DC buck converters. This method is validated by simulation result from MATLAB and implemented in a 0.35 $\mu\mathbf{m}$ CMOS process. The power efficiency of the DC-DC buck converter was scanned for different power MOSFETs sizes at an input voltage of 3.6 V and a load current of 300 mA, and the optimum size (based on optimum power efficiency) is obtained. The results of this simulation verify the accuracy of the power MOSFETs size optimization methods.
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 callDisclaimer: 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.
