Title :
A 233MHz, 80-87% efficient, integrated, 4-phase DC-DC converter in 90nm CMOS
Author :
Hazucha, Peter ; Schrom, Gerhard ; Hahn, Jae-Hong ; Bloechel, Bradley ; Hack, Paul ; Dermer, Greg ; Narendra, Siva ; Gardner, Donald ; Karnik, Tanay ; De, Vivek ; Borkar, Shekhar
Author_Institution :
Circuits Res., Intel Labs., Hillsboro, OR, USA
Abstract :
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.
Keywords :
CMOS integrated circuits; DC-DC power convertors; 100 to 317 MHz; 233 MHz; 4-phase topology; 90 nm; 90nm CMOS; fast hysteretic control; high switching frequency; integrated 4-phase DC-DC converter; multi-Vcc microprocessors; off-chip inductors; CMOS technology; Capacitors; DC-DC power converters; Inductors; Magnetic cores; Magnetic hysteresis; Microprocessors; Size control; Switching frequency; Topology;
Conference_Titel :
VLSI Circuits, 2004. Digest of Technical Papers. 2004 Symposium on
Print_ISBN :
0-7803-8287-0
DOI :
10.1109/VLSIC.2004.1346578
