A Transient Enhancement DC–DC Buck Converter With Dual Operating Modes Control Technique

Hsu, Yi-Chieh; Ting, Chung-Yi; Hsu, Li-Sheng; Lin, Jing‐Yuan; Chen, Charlie Chung‐Ping

doi:10.1109/tcsii.2018.2883889

Cited by 31 publications

(11 citation statements)

References 12 publications

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“…(2) In the Yuan's work [13], to achieve high frequency and high efficiency over a wide load range, a monolithic voltage-mode dc-dc buck converter with advanced burst mode (ABM) and pulse-width modulation (PWM) is pre- Yuan [13] This work Input voltage Hsu [8] This work Input voltage maintains a near constant mode changing point. A counterbased scheme is used to achieve seamless and smooth transition between PWM and ABM.…”

Section: Comparison and Application Analysismentioning

confidence: 99%

“…(3) In the Hsu's work [8], to achieve fast-transient response for DC-DC Buck converter, a proposed operational trans-conductance amplifier with DOM control circuit was used as an error amplifier in the pulse-width modulation (PWM) control circuit. This approach conduces to transient response by accelerating the output level shifting of the error Suh [14] This amplifier.…”

Section: Comparison and Application Analysismentioning

confidence: 99%

“…The oscillating frequency of the BAPWM can be tuned by the delay of the modulator loop. Hsu [8] presented a dual operating modes (DOMs) control technique to achieve fast-transient response for DC-DC Buck converter. The proposed operational transconductance amplifier with DOM control circuit was used as an error amplifier in the PWM control circuit.…”

Section: Introductionmentioning

confidence: 99%

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An Improved Hysteresis Voltage Mode of Synchronous Rectifier Buck Circuit

Shen

Zhong

2020

IEEE Access

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To achieve high power and high efficiency over a wide load range, an improved hybrid hysteresis voltage mode for Buck circuit is proposed in this paper. The strategy and workflow of the proposed improved hybrid hysteresis voltage mode are demonstrated step by step. The output voltage performance of the Buck circuit with proposed hysteresis voltage mode is compared with the same circuit with typical hysteresis voltage mode. Numerical simulation results show that with the introduction of the PD link, the overshoot can be completely controlled or eliminated; with the introduction of the dynamic voltage reference, the static difference can be completely negligible; relatively stable input voltage improves its steady-state working frequency and the electromagnetic interference significantly. Thus, the proposed control strategy can not only achieve satisfied performance, but also provide a basis for further design and optimization. INDEX TERMS Buck circuit, Hysteresis voltage mode, Ripple elimination, Static difference.

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Section: Comparison and Application Analysismentioning

confidence: 99%

Section: Comparison and Application Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Improved Hysteresis Voltage Mode of Synchronous Rectifier Buck Circuit

Shen

Zhong

2020

IEEE Access

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“…There are many techniques to achieve fast transient response depending on the application and converter topology. A fast control can be obtained, for example, with analog control without microcontrollers if the electronic circuits are designed to include all structures (converter and control system) [20], [21]. This is better suited for simpler topologies such as buck converters or low power applications [22].…”

Section: Introductionmentioning

confidence: 99%

Novel Multirate Modulator for High-Bandwidth Multicell Converters

Ferreira

Rezende

Morais

et al. 2021

IEEE Trans. Power Electron.

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Series and parallel multicell converters have been introduced because they provide benefits in term of efficiency and power density. However, they also allow reducing the amount of energy stored in the filters, which potentially allows for faster dynamic responses. Interleaving the control patterns of different cells is another distinctive feature of these converters and is also the root of another potential improvement of the dynamic response: with one PWM update at each subcycle of the switching period, a n-cell converter may change its average output voltage over each of these intervals, while standard converters can only control the voltage over half the switching period. In this paper, a general multirate modulation strategy taking advantage of this property, while avoiding overswitching, and compatible with any n-cell converter is proposed and validated by simulation and experimental results.

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“…In general, fixed operating frequency control and variable operating frequency control are used in the switching regulator. Switching regulators with fixed operating frequency include both voltage mode control [1,2] and current control mode [3][4][5]. Fixed operating frequency control mechanisms must utilize an error amplifier and additional compensation components to stabilize the output voltage of the DC-DC buck converter.…”

Section: Introductionmentioning

confidence: 99%

A Low EMI DC-DC Buck Converter with a Triangular Spread-Spectrum Mechanism

2020

Self Cite

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In this paper, a triangular spread-spectrum mechanism is proposed to suppress the electromagnetic interference (EMI) of a DC-DC buck converter. The proposed triangular spread-spectrum mechanism, which is implemented in the chip, can avoid modifying the printed circuit board of switching regulators. In addition, a lower ripple of output voltage of switching regulators and a better system stability can be realized by the inductive DC resistance (DCR) current sensing circuit. The chip is fabricated by using TSMC 0.18-μm 1P6M CMOS technology. The chip area including PADs is 1.2 × 1.15 mm2. The input voltage range is 2.7~3.3 V and the output voltage is 1.8 V. The maximum load current is 700 mA. The off-chip inductor and capacitor are 3.3 μH and 10 μF, respectively. The experimental results demonstrate that the maximum spur of the proposed DC-DC buck converter with the triangular spread-spectrum mechanism improves to 14dBm. Moreover, the transient recovery time of step-up and step-down loads are both 5 μs. The measured maximum efficiency is 94% when the load current is 200 mA.

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A Transient Enhancement DC–DC Buck Converter With Dual Operating Modes Control Technique

Cited by 31 publications

References 12 publications

An Improved Hysteresis Voltage Mode of Synchronous Rectifier Buck Circuit

An Improved Hysteresis Voltage Mode of Synchronous Rectifier Buck Circuit

Novel Multirate Modulator for High-Bandwidth Multicell Converters

A Low EMI DC-DC Buck Converter with a Triangular Spread-Spectrum Mechanism

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