A high-efficiency variable-voltage CMOS dynamic dc-dc switching regulator

Namgoong, Won; Yu, Mengchen; Meng, Tao

doi:10.1109/isscc.1997.585445

Cited by 77 publications

(42 citation statements)

References 1 publication

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“…For example, the Transmeta Crusoe [42] provides as many as two clock frequencies for a single voltage level and 36 combinations. However, Gutnik and Chandrakasan [16] and Namgoang et al [33] discuss architectures where continuous speed adjustments are possible and Melham et al [30] note that systems which are able to operate on a (more or less) continuous voltage 5 spectrum are rapidly becoming a reality thanks to advances in power supply engineering and CPU design. Chandrakasan et al [12] shows that a few voltage/speed levels are sufficient to achieve almost the same energy savings as infinite levels.…”

Section: Power Modelsmentioning

confidence: 99%

Power Aware Smart Submunitions (PASS)

Barnett¹

2004

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Section: Power Modelsmentioning

confidence: 99%

Power Aware Smart Submunitions (PASS)

Barnett¹

2004

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“…During a voltage transition, it takes a nite amount of time for the output voltage of the DC-DC converter to transition from the present level to the 8 desired level. Ef cient DC-DC regulators with fast transition times were reported in [38,39]. Complementary to the supply voltage variation is the accompanying variation of the clock frequency.…”

Section: Overheads Due To Dvs/dpmmentioning

confidence: 99%

Power Aware Distributed Systems

Schott¹,

Srivastava²,

Riley³

et al. 2004

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“…Voltage converters for these applications need to provide several key specifications to allow for long-time operation with limited energy [3,4]. They should operate with high conversion efficiency, and be less selfconsuming.…”

Section: Introductionmentioning

confidence: 99%

Ultra-fast Adaptive Frequency-controlled Hysteretic Buck Converter for Portable Devices

Kim¹,

Kong²

2016

JSTS:Journal of Semiconductor Technology and Science

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Abstract-The paper describes a hysteretic buck converter including a differentiator and an adaptive hysteresis window controller. Differentiating the feedback signal achieves ultra-fast switching of the buck converter. The adaptive hysteresis window control allows a monotonous operation with predictable noise spectrum, and gives way to efficient design for variable supply and output voltages. The measurement results in a 0.13-μm CMOS process indicated that the switching frequency became double times higher, and the voltage ripple was reduced by up to 69%. They also indicated that the normalized switching frequency variation was reduced by 74% with variable V DD and by 63% with variable V OUT . The power efficiency was improved by 3.5% depending on loading condition. Index Terms-Hysteretic buck converter, adaptive hysteresis window control, variable supply voltage

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A high-efficiency variable-voltage CMOS dynamic dc-dc switching regulator

Cited by 77 publications

References 1 publication

Power Aware Smart Submunitions (PASS)

Power Aware Smart Submunitions (PASS)

Power Aware Distributed Systems

Ultra-fast Adaptive Frequency-controlled Hysteretic Buck Converter for Portable Devices

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