This paper presents a technique to efficiently supply power over a wide power range using a fully-integrated on-chip converter for dynamic voltage scaling (DVS) based applications. All components, including filter elements, are integrated on-chip. To achieve high efficiency the converter adaptively switches between different modes of operation by detecting the output current. The design, implemented in IBM 130 nm CMOS technology, achieves a peak efficiency of 77% at reduced temperature of 8°C and has a maximum efficiency of 74.5% under normal operating conditions. The converter supplies power over a 450X output power range (0.6 mW to 266 mW). To the best of our knowledge, this is the largest reported power range for a high-efficiency, fully-integrated on-chip power converter to date.
Bibliographical noteFunding Information:
Manuscript received November 30, 2010; revised March 05, 2011; accepted April 08, 2011. Date of publication June 16, 2011; date of current version July 22, 2011. This paper was approved by Guest Editor Alvin Loke. This work was supported in part by SRC under project number 1804.001. The authors are with the University of Minnesota, Minneapolis, MN 55455 USA (e-mail: firstname.lastname@example.org). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/JSSC.2011.2157253
- Dynamic voltage scaling
- frequency scaling
- fully-integrated DC-DC converter
- switch scaling
- wide output power range