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A 233MHz, 80-87% efficient, integrated, 4-phase DC-DC converter in 90nm CMOS

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11 Author(s)
Hazucha, P. ; Circuits Res., Intel Labs., Hillsboro, OR, USA ; Schrom, G. ; Jae-Hong Hahn ; Bloechel, B.
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We demonstrate an integrated buck DC-DC converter implemented in a 90nm CMOS technology for multi-Vcc microprocessors. High switching frequency (100-317MHz), 4-phase topology, and fast hysteretic control reduce inductor and capacitor sizes by 1000x, thereby enabling off-chip inductors with no magnetic core and an on-chip decoupling capacitor. The converter achieves 80-87.7% efficiency and 10% peak-to-peak output noise.

Published in:

VLSI Circuits, 2004. Digest of Technical Papers. 2004 Symposium on

Date of Conference:

17-19 June 2004

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