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Fully-Integrated On-Chip DC-DC Converter With a 450X Output Range

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2 Author(s)
Kudva, S.S. ; Univ. of Minnesota, Minneapolis, MN, USA ; Harjani, R.

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.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:46 ,  Issue: 8 )