Journal
IEEE JOURNAL OF SOLID-STATE CIRCUITS
Volume 46, Issue 8, Pages 1940-1951Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSSC.2011.2157253
Keywords
Dynamic voltage scaling; frequency scaling; fully-integrated DC-DC converter; switch scaling; wide output power range
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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 degrees 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.
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