Abstract
This paper presents a dynamic logic based adaptive dead-time control circuit (DADTC) for fast and adaptive control to minimize body diode conduction losses and dead-time of the buck regulator operating in discontinuous conduction mode (DCM). Dead-time is an important metric for improving efficiency of low voltage converters. DADTC provides instant sensing and feedback based on the load to minimize dead-time significantly compared to prior art and enables higher overall power efficiency of the converter. Further, the presented buck converter has inherent pulse skipping mode to lower the switching frequency at light loads further enhancing light load efficiency. The buck regulator was fabricated in 0.35 μm CMOS process with an input voltage range of 1.8V-3V and load current range of 1mA-200mA. Measurement results show that the proposed design achieves peak power efficiency of 94.6% and a high overall power efficiency ( > ~89%) for load currents greater than 5mA with a sensing delay of only ~5ns for V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">IN</sub> = 1.8V.
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.
