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A fully-integrated switched-capacitor 2∶1 voltage converter with regulation capability and 90% efficiency at 2.3A/mm2

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6 Author(s)
Chang, L. ; IBM T. J. Watson Res. Center, Yorktown Heights, NY, USA ; Montoye, R.K. ; Ji, B.L. ; Weger, A.J.
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A switched-capacitor DC-DC voltage converter in 45 nm SOI CMOS leverages on-chip trench capacitors to achieve 90% efficiency at an output of 2.3A/mm2 for 2 V-to-0.95 V conversion at 100 MHz. Operation in step-up and step-down modes is demonstrated. Combined with stacked voltage domains, self-regulation capability enables further efficiency improvement.

Published in:

VLSI Circuits (VLSIC), 2010 IEEE Symposium on

Date of Conference:

16-18 June 2010