A 0.016 mV/mA Cross-Regulation 5-Output SIMO DC–DC Buck Converter Using Output-Voltage-Aware Charge Control Scheme

Pham, Ngoc-Son; Yoo, Taegeun; Kim, Tony Tae-Hyoung; Lee, Chan-Gun; Baek, Kwang‐Hyun

doi:10.1109/tpel.2017.2785838

Cited by 33 publications

(27 citation statements)

References 19 publications

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“…It is shown that the proposed PLLbased charge control scheme could achieve 0.038mV/mA CR, 43.2% smaller than that of [4] during the same 150mA [4] is not used, the chip size, efficiency and application of SIMO will not be limited by freewheel period. Unlike [2,3], through PLL locking switching frequency, the worst CR in this charge controlled SIMO need not appear on the last channel, and its value of 0.052mV/mA is 60.9% smaller even during heavier load transient.…”

Section: Resultsmentioning

confidence: 95%

“…To suppress CR of the OPDC SIMO, charge-balance control was reported. Among them, charge control has already proven itself of good performance on CR suppression [2][3][4][5][6][7][8]. The typical charge control loop is exhibited in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…But because the end timing of a switching period in OPDC is determined by the beginning of next switching cycle, this charge control loop can not be applied to the last DC output. Therefore, the last output in [2,3] has the worst CR performance. Freewheel period in [4] is set as an additional non-DC-output channel to balance accumulative error and buffer the worst CR of the last output.…”

Section: Introductionmentioning

confidence: 99%

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PLL-based charge control scheme for SIMO buck DC-DC converter

Liu

et al. 2021

IEICE Electron. Express

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This paper presents a phase-locking-loop-based (PLL-based) charge control scheme to enhance the cross regulation (CR) performance of charge-controlled SIMO Buck DC-DC without freewheel period. By combining PLL structure with the traditional charge control scheme, each channel could be regulated by an independent charge control loop. Moreover, a gain-adapted charge pump (GACP) technique is applied for the stability in multi-load condition. The multi-loop stability and CR expressions are derivated to improve their relative performance. Experimental results show that the proposed scheme can achieve worstcase CR of 0.052mV/mA in 384mA load transient, and 0.038mV/mA CR in 150mA load transient with at least 43.2% improvement above the existing charge control schemes.

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Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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PLL-based charge control scheme for SIMO buck DC-DC converter

Liu

et al. 2021

IEICE Electron. Express

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“…The real‐coded genetic algorithm optimization method for flexible plate structure has been proposed to design controllers for single‐input single‐output and SIMO systems [11]. The output–voltage–aware charge method was employed in [12] to control a DC–DC buck converter with five outputs and one control input.…”

Section: Introductionmentioning

confidence: 99%

Two novel approaches of adaptive finite‐time sliding mode control for a class of single‐input multiple‐output uncertain nonlinear systems

Hosseinabadi

Abadi

Mekhilef

et al. 2021

IET Cyber-Syst and Robotics

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Some systems, in spite of having multiple outputs, have only one control input, which makes their control a challenge. Two novel controllers are proposed that utilise an adaptive finite-time sliding mode control (AFSMC) scheme for a class of single-input multiple-output (SIMO) nonlinear systems in the presence of unknown mismatched uncertainties. To alleviate the inherent chattering phenomenon of sliding mode control, new forms of the two designed controllers are suggested by using new sliding surfaces. Not only can the proposed AFSMC scheme stabilise the system in a finite time, but also it can provide estimated data of the uncertainty upper bound in the controller. Lyapunov stability theory is used to obtain finite-time stability analysis of the closed-loop system. Finally, simulation results are carried out in Simulink/MATLAB for a four-dimensional autonomous hyper-chaotic system with mismatched uncertainties as an example of SIMO uncertain nonlinear systems to reveal the effectiveness of the proposed controllers.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…Recent literature explored compact and low-cost solutions with hybrid and single-inductor multiple-output (SIMO) converters [5], [6], [7], [8], [9], [10], [11], [12], [13], [14] to generate multiple supply rails. The time-multiplexing control (TMC) is applied in [6], [7], and [8] for its immunity to the cross-regulation problem.…”

mentioning

confidence: 99%

A Hybrid Single-Inductor Bipolar Triple-Output DC–DC Converter With High-Quality Positive Outputs for AMOLED Displays

Mao

Lü

Maloberti

et al. 2023

IEEE Trans. Circuits Syst. I

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This paper presents a hybrid single-inductor bipolar triple-output (SIBTO) DC-DC converter for active-matrix organic light-emitting diode (AMOLED) displays. Generating the bipolar rails V OP and V ON for the pixel array and the analog rail AV DD for the source driver with a single inductor greatly reduces the system size and cost. This work adopts the floating negative output topology for an ultra-clean positive output. In addition, we propose a push-pull charge balancer to compensate and regulate the V OP , improving the line and load regulation with continuous currents and acceptable power consumption. This work also proposed a slow-comparator based ordered power distributive control (SC-OPDC) to regulate the AV DD with a pulse-skipping scheme to reduce the power loss. The designed power transistor buffers with adaptive deadtime control improve power conversion efficiency and decrease the required minimum load current of AV DD . The proposed SIBTO converter, implemented in 0.18-µm BCD process, operates at 1.67 MHz. It achieves a peak efficiency of 94.1% at 0.88 W output and a maximum output power of 3.67 W with an efficiency of 87%. The maximum output voltage ripples are 5 mV, 17 mV, and 7.5 mV for V OP , V ON , and AV DD , respectively.

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A 0.016 mV/mA Cross-Regulation 5-Output SIMO DC–DC Buck Converter Using Output-Voltage-Aware Charge Control Scheme

Cited by 33 publications

References 19 publications

PLL-based charge control scheme for SIMO buck DC-DC converter

PLL-based charge control scheme for SIMO buck DC-DC converter

Two novel approaches of adaptive finite‐time sliding mode control for a class of single‐input multiple‐output uncertain nonlinear systems

A Hybrid Single-Inductor Bipolar Triple-Output DC–DC Converter With High-Quality Positive Outputs for AMOLED Displays

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