CCM–DCM Power-Multiplexed Control Scheme for Single-Inductor Multiple-Output DC–DC Power Converter With No Cross Regulation

Huang, Wangxin; Qahouq, Jaber A. Abu; Dang, Zhigang

doi:10.1109/tia.2016.2630018

Cited by 39 publications

(11 citation statements)

References 20 publications

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“…It can be seen from inspection that the total time depicted in (13) for current moving from one level to another in one cycle is always less than (14) proposed in Huang et al 15 roughly by three times. The proposed total time in (13) will affect the peak current resulting in lower RMS current.…”

Section: Design Of Tm-controlled Diso Convertermentioning

confidence: 71%

“…Ideal timing diagram of DISO buck converter: T 1 and T 2 show the time multiplexed signals for the switches; the inductor current of the proposed control method, as shown in the second bottom trace, the bottom trace shows the wave shape of inductor current (DCM) proposed in Huang et al 15 The frequency of lower band is given as follows:…”

Section: Design Of Tm-controlled Diso Convertermentioning

confidence: 99%

“…As there is no DCM, the proposed control scheme does not requires a current reset time used in Huang et al 15 The efficiency and transient response of the converter plays vital role in the overall analysis of any converter. To perform the efficiency comparison between the proposed CCM and the previous DCM control scheme, the circuit is modeled first in LTspice, and then the results were verified experimentally.…”

Section: Design Of Tm-controlled Diso Convertermentioning

confidence: 99%

See 2 more Smart Citations

Time‐multiplexed hysteretic control for single‐inductor dual‐input single‐output DC‐DC power converter

Alam

Siwakoti

2021

Circuit Theory & Apps

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Single-inductor multi-input single-output (SI-MISO) switching DC-DC power converter architecture is a cost effective solution to applications where multiple input sources are required to be managed with a limited space and cost. This paper presents a new time-multiplexed hysteretic control (TMHC) scheme for SI-DISO topology to decouple the power sharing among two input sources.Unlike previously reported solutions with discontinuous conduction or pseudo-continuous conduction operation of the inductor, this paper focuses on how to keep the inductor current in a continuous conduction mode (CCM) and proposed a control scheme with considerably lower ripple current with fast transition time upon switching and higher efficiency. The mathematical proof using the expressions of inductor ripple current, comparison between efficiency and transition time from one level to other, is derived. Additionally, a low-cost analog circuitry has been implemented to incorporate the proposed control scheme. Experimental results from the hardware prototype are given to verify the proposed control scheme.

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Section: Design Of Tm-controlled Diso Convertermentioning

confidence: 71%

Section: Design Of Tm-controlled Diso Convertermentioning

confidence: 99%

Section: Design Of Tm-controlled Diso Convertermentioning

confidence: 99%

See 1 more Smart Citation

Time‐multiplexed hysteretic control for single‐inductor dual‐input single‐output DC‐DC power converter

Alam

Siwakoti

2021

Circuit Theory & Apps

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“…To reduce system area and cost, many platforms use a power management integrated circuit (PMIC [52,109,134]) that incorporates multiple VRs (and other functions) into one integrated circuit. In our model, the VR area and cost are calculated based on the Icc max requirements for each domain of a PDN.…”

Section: Board Area and Bom Modelingmentioning

confidence: 99%

“…We assume an optimized solution with a PMIC for processors with TDPs up to 18W for all PDNs. Higher-TDP processors typically use a traditional voltage regulator module (VRM [59]) instead of a PMIC due to the high current requirements of these processors [52,109]. We obtain the actual mapping between the Icc max and the area/cost directly from Texas Instruments VR vendor [118].…”

Section: Board Area and Bom Modelingmentioning

confidence: 99%

FlexWatts: A Power- and Workload-Aware Hybrid Power Delivery Network for Energy-Efficient Microprocessors

Haj-Yahya¹,

Alser²,

Kim³

et al. 2020

Preprint

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Modern client processors typically use one of three commonlyused power delivery network (PDN) architectures: 1) motherboard voltage regulators (MBVR), 2) integrated voltage regulators (IVR), and 3) low dropout voltage regulators (LDO). We observe that the energy-e ciency of each of these PDNs varies with the processor power (e.g., thermal design power (TDP) and dynamic power-state) and workload characteristics (e.g., workload type and computational intensity). This leads to energyine ciency and performance loss, as modern client processors operate across a wide spectrum of power consumption and execute a wide variety of workloads.To address this ine ciency, we propose FlexWatts, a hybrid adaptive PDN for modern client processors whose goal is to provide high energy-e ciency across the processor's wide range of power consumption and workloads. FlexWatts provides high energy-e ciency by intelligently and dynamically allocating PDNs to processor domains depending on the processor's power consumption and workload. FlexWatts is based on three key ideas. First, FlexWatts combines IVRs and LDOs in a novel way to share multiple on-chip and o -chip resources and thus reduce cost, as well as board and die area overheads. This hybrid PDN is allocated for processor domains with a wide power consumption range (e.g., CPU cores and graphics engines) and it dynamically switches between two modes: IVR-Mode and LDO-Mode, depending on the power consumption. Second, for all other processor domains (that have a low and narrow power range, e.g., the IO domain), FlexWatts statically allocates o -chip VRs, which have high energy-e ciency for low and narrow power ranges. Third, FlexWatts introduces a novel prediction algorithm that automatically switches the hybrid PDN to the mode (IVR-Mode or LDO-Mode) that is the most bene cial based on processor power consumption and workload characteristics.

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Control Methods for Minimizing Cross Regulation in Single Inductor Multiple Output Converters – A Review

Samiullah

Iqbal

Ashraf

et al. 2019

Advances in Intelligent Systems and Computing

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CCM–DCM Power-Multiplexed Control Scheme for Single-Inductor Multiple-Output DC–DC Power Converter With No Cross Regulation

Cited by 39 publications

References 20 publications

Time‐multiplexed hysteretic control for single‐inductor dual‐input single‐output DC‐DC power converter

Time‐multiplexed hysteretic control for single‐inductor dual‐input single‐output DC‐DC power converter

FlexWatts: A Power- and Workload-Aware Hybrid Power Delivery Network for Energy-Efficient Microprocessors

Control Methods for Minimizing Cross Regulation in Single Inductor Multiple Output Converters – A Review

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