An energy efficient VPP generator with fast ramp-up time for mobile DRAM

Kyu Young Kim, Yonghwan Kim, Doo Chan Lee, Yu Ri Kang, Hoonki Kim, Soo-Won Kim, Jongsun Park

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An energy efficient VPP generator with fast ramp-up time for mobile DRAM is presented in this paper. Instead of using a fixed pumping clock frequency as in the conventional VPP generator, the proposed V PP generator adopts a voltage-controlled oscillator (VCO) and uses variable pumping frequencies to improve the ramp-up time as well as energy efficiency. Numerical results show that the VCO based VPP generators achieve energy savings of up to 34% with 40% improvement on ramp-up time when compared to the conventional ring oscillator (RO) based design. Our proposed VPP generator, which uses a three-stage voltage doubler as a charge pump, was implemented and fabricated in CMOS 0.13 μm process. The V PP generator chip's core occupies 0.6 mm2 area and consumes 1162 nJ (average power of 47.8 mW during 24 μs ramp-up time) while generating 3.0 V output voltage with 1.0 nF load capacitor, 2.0 mA current load and 1.2 V supply voltage.

Original languageEnglish
Article number5767518
Pages (from-to)1488-1494
Number of pages7
JournalIEEE Journal of Solid-State Circuits
Volume46
Issue number6
DOIs
Publication statusPublished - 2011 Jun 1

Fingerprint

Dynamic random access storage
Variable frequency oscillators
Electric potential
Energy efficiency
Clocks
Energy conservation
Capacitors
Pumps

Keywords

  • Charge pump
  • mobile DRAM
  • V generator
  • voltage controlled oscillator
  • voltage doubler

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

An energy efficient VPP generator with fast ramp-up time for mobile DRAM. / Kim, Kyu Young; Kim, Yonghwan; Lee, Doo Chan; Kang, Yu Ri; Kim, Hoonki; Kim, Soo-Won; Park, Jongsun.

In: IEEE Journal of Solid-State Circuits, Vol. 46, No. 6, 5767518, 01.06.2011, p. 1488-1494.

Research output: Contribution to journalArticle

Kim, Kyu Young ; Kim, Yonghwan ; Lee, Doo Chan ; Kang, Yu Ri ; Kim, Hoonki ; Kim, Soo-Won ; Park, Jongsun. / An energy efficient VPP generator with fast ramp-up time for mobile DRAM. In: IEEE Journal of Solid-State Circuits. 2011 ; Vol. 46, No. 6. pp. 1488-1494.
@article{b20897e99c8d44449127f98487aa629b,
title = "An energy efficient VPP generator with fast ramp-up time for mobile DRAM",
abstract = "An energy efficient VPP generator with fast ramp-up time for mobile DRAM is presented in this paper. Instead of using a fixed pumping clock frequency as in the conventional VPP generator, the proposed V PP generator adopts a voltage-controlled oscillator (VCO) and uses variable pumping frequencies to improve the ramp-up time as well as energy efficiency. Numerical results show that the VCO based VPP generators achieve energy savings of up to 34{\%} with 40{\%} improvement on ramp-up time when compared to the conventional ring oscillator (RO) based design. Our proposed VPP generator, which uses a three-stage voltage doubler as a charge pump, was implemented and fabricated in CMOS 0.13 μm process. The V PP generator chip's core occupies 0.6 mm2 area and consumes 1162 nJ (average power of 47.8 mW during 24 μs ramp-up time) while generating 3.0 V output voltage with 1.0 nF load capacitor, 2.0 mA current load and 1.2 V supply voltage.",
keywords = "Charge pump, mobile DRAM, V generator, voltage controlled oscillator, voltage doubler",
author = "Kim, {Kyu Young} and Yonghwan Kim and Lee, {Doo Chan} and Kang, {Yu Ri} and Hoonki Kim and Soo-Won Kim and Jongsun Park",
year = "2011",
month = "6",
day = "1",
doi = "10.1109/JSSC.2011.2128170",
language = "English",
volume = "46",
pages = "1488--1494",
journal = "IEEE Journal of Solid-State Circuits",
issn = "0018-9200",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "6",

}

TY - JOUR

T1 - An energy efficient VPP generator with fast ramp-up time for mobile DRAM

AU - Kim, Kyu Young

AU - Kim, Yonghwan

AU - Lee, Doo Chan

AU - Kang, Yu Ri

AU - Kim, Hoonki

AU - Kim, Soo-Won

AU - Park, Jongsun

PY - 2011/6/1

Y1 - 2011/6/1

N2 - An energy efficient VPP generator with fast ramp-up time for mobile DRAM is presented in this paper. Instead of using a fixed pumping clock frequency as in the conventional VPP generator, the proposed V PP generator adopts a voltage-controlled oscillator (VCO) and uses variable pumping frequencies to improve the ramp-up time as well as energy efficiency. Numerical results show that the VCO based VPP generators achieve energy savings of up to 34% with 40% improvement on ramp-up time when compared to the conventional ring oscillator (RO) based design. Our proposed VPP generator, which uses a three-stage voltage doubler as a charge pump, was implemented and fabricated in CMOS 0.13 μm process. The V PP generator chip's core occupies 0.6 mm2 area and consumes 1162 nJ (average power of 47.8 mW during 24 μs ramp-up time) while generating 3.0 V output voltage with 1.0 nF load capacitor, 2.0 mA current load and 1.2 V supply voltage.

AB - An energy efficient VPP generator with fast ramp-up time for mobile DRAM is presented in this paper. Instead of using a fixed pumping clock frequency as in the conventional VPP generator, the proposed V PP generator adopts a voltage-controlled oscillator (VCO) and uses variable pumping frequencies to improve the ramp-up time as well as energy efficiency. Numerical results show that the VCO based VPP generators achieve energy savings of up to 34% with 40% improvement on ramp-up time when compared to the conventional ring oscillator (RO) based design. Our proposed VPP generator, which uses a three-stage voltage doubler as a charge pump, was implemented and fabricated in CMOS 0.13 μm process. The V PP generator chip's core occupies 0.6 mm2 area and consumes 1162 nJ (average power of 47.8 mW during 24 μs ramp-up time) while generating 3.0 V output voltage with 1.0 nF load capacitor, 2.0 mA current load and 1.2 V supply voltage.

KW - Charge pump

KW - mobile DRAM

KW - V generator

KW - voltage controlled oscillator

KW - voltage doubler

UR - http://www.scopus.com/inward/record.url?scp=79957664355&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79957664355&partnerID=8YFLogxK

U2 - 10.1109/JSSC.2011.2128170

DO - 10.1109/JSSC.2011.2128170

M3 - Article

AN - SCOPUS:79957664355

VL - 46

SP - 1488

EP - 1494

JO - IEEE Journal of Solid-State Circuits

JF - IEEE Journal of Solid-State Circuits

SN - 0018-9200

IS - 6

M1 - 5767518

ER -