Current-mode DC-DC buck converter with reliable hysteretic-mode control and dual modulator for fast dynamic voltage scaling

Jungmoon Kim; Hyunho Chu; Chulwoo Kim

doi:10.1109/MWSCAS.2009.5235921

Current-mode DC-DC buck converter with reliable hysteretic-mode control and dual modulator for fast dynamic voltage scaling

Jungmoon Kim^*
, Hyunho Chu
, Chulwoo Kim

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Citations (Scopus)

Abstract

This paper describes an integrated current-mode buck converter with reliable hysteretic mode controller and modulators for fast dynamic voltage scaling (DVS). The proposed mode controller and modulators enable the DC-DC buck converter to perform its smooth mode transitions at optimal points. The continuous current-limiting and DCM controls drive the DVS to track the reference at the maximum speed in both PWM and PFM modes. The DC-DC buck converter is implemented in a 90-nm 3.3V CMOS process. The maximum efficiency reaches 94.5%. The hysteretic mode controller keeps its efficiency always at more than 75% for any load conditions. During a mode transition, the output voltage has no overshoots, and it can track the reference voltage instantly.

Original language	English
Title of host publication	2009 52nd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS '09
Pages	941-944
Number of pages	4
DOIs	https://doi.org/10.1109/MWSCAS.2009.5235921
Publication status	Published - 2009
Event	2009 52nd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS '09 - Cancun, Mexico Duration: 2009 Aug 2 → 2009 Aug 5

Publication series

Name	Midwest Symposium on Circuits and Systems
ISSN (Print)	1548-3746

Other

Other	2009 52nd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS '09
Country/Territory	Mexico
City	Cancun
Period	09/8/2 → 09/8/5

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/MWSCAS.2009.5235921

Cite this

Current-mode DC-DC buck converter with reliable hysteretic-mode control and dual modulator for fast dynamic voltage scaling. / Kim, Jungmoon; Chu, Hyunho; Kim, Chulwoo.
2009 52nd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS '09. 2009. p. 941-944 5235921 (Midwest Symposium on Circuits and Systems).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kim, J, Chu, H & Kim, C 2009, Current-mode DC-DC buck converter with reliable hysteretic-mode control and dual modulator for fast dynamic voltage scaling. in 2009 52nd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS '09., 5235921, Midwest Symposium on Circuits and Systems, pp. 941-944, 2009 52nd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS '09, Cancun, Mexico, 09/8/2. https://doi.org/10.1109/MWSCAS.2009.5235921

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title = "Current-mode DC-DC buck converter with reliable hysteretic-mode control and dual modulator for fast dynamic voltage scaling",

abstract = "This paper describes an integrated current-mode buck converter with reliable hysteretic mode controller and modulators for fast dynamic voltage scaling (DVS). The proposed mode controller and modulators enable the DC-DC buck converter to perform its smooth mode transitions at optimal points. The continuous current-limiting and DCM controls drive the DVS to track the reference at the maximum speed in both PWM and PFM modes. The DC-DC buck converter is implemented in a 90-nm 3.3V CMOS process. The maximum efficiency reaches 94.5\%. The hysteretic mode controller keeps its efficiency always at more than 75\% for any load conditions. During a mode transition, the output voltage has no overshoots, and it can track the reference voltage instantly.",

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AB - This paper describes an integrated current-mode buck converter with reliable hysteretic mode controller and modulators for fast dynamic voltage scaling (DVS). The proposed mode controller and modulators enable the DC-DC buck converter to perform its smooth mode transitions at optimal points. The continuous current-limiting and DCM controls drive the DVS to track the reference at the maximum speed in both PWM and PFM modes. The DC-DC buck converter is implemented in a 90-nm 3.3V CMOS process. The maximum efficiency reaches 94.5%. The hysteretic mode controller keeps its efficiency always at more than 75% for any load conditions. During a mode transition, the output voltage has no overshoots, and it can track the reference voltage instantly.

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Current-mode DC-DC buck converter with reliable hysteretic-mode control and dual modulator for fast dynamic voltage scaling

Abstract

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ASJC Scopus subject areas

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