International Journal of Recent Trends in Engineering & Research

online ISSN

Improvement Of Conversion Efficiency For Passive Elements Converter Load In Digital Circuits

Publication Date : 30/01/2018


DOI : 10.23883/IJRTER.CONF.20171225.072.C2N5O


Author(s) :

Mr. P.RAJU , Ms.G.JHANSI , Ms.SH.SHAFIYA .


Conference Name :
RECENT ADVANCES IN ELECTRONICS AND COMMUNICATION ENGINEERING-2017



Abstract :

: This work presents a fully integrated hybrid inductive/capacitive converter maintaining high efficiency for a load range of 2 mA to 140 mA (70×) suitable for the dynamic voltage scaling (DVS) based loads. This high efficiency is achieved by using an inductive converter for higher loads (15–140 mA, 0.50–0.9 V) and a capacitive converter for lighter loads (2–5 mA, 0.40–0.55 V) with a 50 mV hysteresis margin. A digital state machine activates the appropriate converter based on the power efficiency and enables the converter hand-over. The functional feasibility of implementing digital circuits as representative loads under the inductor is shown thereby increasing the peak converter power density from 0.387 W/mm2 to 4.1 W/mm2 with only a minor hit on the efficiency. The maximum measured efficiency is achieved in inductive mode of operation and decreases from 76.4% to 71% when digital circuits are present under the inductor. The design was fabricated in IBM’s 32 nm SOI technology.


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