Area-driven optimisation of switched-capacitor DC/DC converters

Breussegem, T.M. Van; Wens, Mike; Geukens, Eldert; Geys, David; Steyaert, Michiel

doi:10.1049/el:20081687

Cited by 27 publications

(7 citation statements)

References 2 publications

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“…For the SC converter with a linear conversion ratio, which exhibits a similar charge multiplier coefficient at each stage, equal size of charging capacitors are used in every stage. Capacitance optimisation, as in previous research work [8, 16, 17], is not suitable for this linear conversion ratio SC converter. By having an equal charging capacitor in every stage, the driving capability for a defined amount of capacitance is made optimum [18].…”

Section: Analysis Of the Design Parameters Of Hv Sc Dc–dc Convertermentioning

confidence: 97%

Efficient ultra‐high‐voltage controller‐based complementary‐metal‐oxide‐semiconductor switched‐capacitor DC–DC converter for radio‐frequency micro‐electro‐mechanical systems switch actuation

Wong¹,

Arslan²,

Erdogan³

et al. 2013

IET Circuits, Devices & Systems

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Achieving wireless connectivity in ever smaller, lower power portable devices with increasing number of features and better radio-frequency (RF) performance is becoming difficult to fulfill through existing RF front-end technology. RF microelectro-mechanical systems (MEMS) switch technology, which has significantly better RF characteristics than conventional technology and has near-zero power consumption, is one of the emerging solutions for next generation RF front-ends. However, to achieve satisfactory RF MEMS device performance, it is often necessary to have an actuating circuitry to generate high direct current (DC) voltages for device actuation with low power consumption. In this study, the authors present an RF MEMS switch controller based on a switched-capacitor (SC) DC-DC converter in a 0.35 μm CMOS technology. In this design, novel design techniques for a higher output voltage and lower power consumption in a smaller die area are proposed. The authors demonstrate the design of the high-voltage (HV) SC DC-DC converter by using low-voltage transistors and address reliability issues in the design. Through the proposed design techniques, the SC DC-DC converter achieves more than 25% higher boosted voltage compared to converters that use HV transistors. The proposed design provides 40% power reduction through the charge recycling circuit. Moreover, the SC DC-DC converter achieves 45% smaller than the area of the conventional converter.

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Section: Analysis Of the Design Parameters Of Hv Sc Dc–dc Convertermentioning

confidence: 97%

Efficient ultra‐high‐voltage controller‐based complementary‐metal‐oxide‐semiconductor switched‐capacitor DC–DC converter for radio‐frequency micro‐electro‐mechanical systems switch actuation

Wong¹,

Arslan²,

Erdogan³

et al. 2013

IET Circuits, Devices & Systems

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“…Thus the key question is how to realize an integrated DC/DC using the smallest die area possible or to optimize the use of a given die area in terms of voltage conversion and wanted output power. Therefore, an area driven optimization was performed by the authors and recently published [3]. It is proven in this publication that a Dickson type implementation is superior to a cascaded voltage doubler implementation.…”

Section: The Charge Pumpmentioning

confidence: 99%

A DMOS integrated 320mW capacitive 12V to 70V DC/DC-converter for LIDAR applications

Breussegem¹,

Wens²,

Redouté³

et al. 2009

2009 IEEE Energy Conversion Congress and Exposition

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“…Charge pump has been one of the popular DC-DC converting circuits due to its attractive features such as magnetic-less structure, high efficiency and high integration [1]. Therefore, many types of two-phase charge pump topologies, such as Dickson, Fibonacci, voltage doubler, series-parallel charge pumps [2][3][4][5][6], have been developed. Among them, Fibonacci charge pump shows more advantages, using the minimum number of capacitors for the highest conversion ratio compared to Dickson and voltage doubler topologies.…”

Section: Introductionmentioning

confidence: 99%

P‐52: A Fibonacci‐Like Charge Pump and its Current Drive Capacity Enhancement for Display Driver ICs

Ding

Liu

Zhou

et al. 2017

Symp Digest of Tech Papers

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In this work, a mixed-Fibonacci charge pump scheme with gate drive enhancement is proposed to provide as high as 30 V output voltage for display driver integrated circuits (ICs). By generating a high supply voltage (<6.6 V) with a first voltage doubler charge pump, the subsequent Fibonacci charge pump engages more middle-voltage (MV) power transistors and more MV control signals. This improves the current drive capacity by approximately 50%-120%, and the power efficiency is optimized by approximately 10%. Alternatively, it saves about 50% of chip size compared with the traditional scheme.Based on a 0.11 μm 1.5 V/6 V/32 V process, the design is fabricated and the performance improvement is validated. The novel one can achieve a peak current drive capacity of 1.74 mA and its peak power efficiency is 74%.

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Area-driven optimisation of switched-capacitor DC/DC converters

Cited by 27 publications

References 2 publications

Efficient ultra‐high‐voltage controller‐based complementary‐metal‐oxide‐semiconductor switched‐capacitor DC–DC converter for radio‐frequency micro‐electro‐mechanical systems switch actuation

Efficient ultra‐high‐voltage controller‐based complementary‐metal‐oxide‐semiconductor switched‐capacitor DC–DC converter for radio‐frequency micro‐electro‐mechanical systems switch actuation

A DMOS integrated 320mW capacitive 12V to 70V DC/DC-converter for LIDAR applications

P‐52: A Fibonacci‐Like Charge Pump and its Current Drive Capacity Enhancement for Display Driver ICs

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