DocumentCode
1964982
Title
An integrated four-phase buck converter delivering 1A/mm2 with 700ps controller delay and network-on-chip load in 45-nm SOI
Author
Sturcken, N. ; Petracca, M. ; Warren, S. ; Carloni, L.P. ; Peterchev, A.V. ; Shepard, K.L.
Author_Institution
Columbia Univ., New York, NY, USA
fYear
2011
fDate
19-21 Sept. 2011
Firstpage
1
Lastpage
4
Abstract
We present a four-phase integrated buck converter in 45nm SOI technology. The controller uses unlatched pulse-width modulation (PWM) with nonlinear gain to provide both stable small-signal dynamics and fast response (~700ps) to large input and output transients. This fast control approach reduces the required output capacitance by 5X in comparison to a controller with latched PWM at similar operating point. The converter switches at 80MHz and delivers 1A/mm2 at 83% efficiency and 0.66 conversion ratio.
Keywords
PWM power convertors; delays; elemental semiconductors; network-on-chip; silicon; silicon-on-insulator; SOI technology; Si; controller delay; converter switch; efficiency 83 percent; fast control approach; four-phase integrated buck converter; frequency 80 MHz; input-output transient; latched PWM; network-on-chip; nonlinear gain; size 45 nm; stable small-signal dynamic; time 700 ps; unlatched PWM; unlatched pulse-width modulation; Capacitance; Current density; Delay; Pulse width modulation; Switches; Transient analysis; Voltage control;
fLanguage
English
Publisher
ieee
Conference_Titel
Custom Integrated Circuits Conference (CICC), 2011 IEEE
Conference_Location
San Jose, CA
ISSN
0886-5930
Print_ISBN
978-1-4577-0222-8
Type
conf
DOI
10.1109/CICC.2011.6055336
Filename
6055336
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