A Highly Integrated Power Management IC for Advanced Mobile Applications

Shi, Chunlei; Walker, B.; Zeisel, E.; Hu, Bonian; McAllister, Graham

doi:10.1109/jssc.2007.900284

Cited by 88 publications

(4 citation statements)

References 7 publications

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“…Switching inductive converters use inductors to transfer power from the battery to the load, which might lead to 100% efficiency in an ideal case. Theme it of these devices is that they exhibit an excellent transient performance, such as line/load regulations, without any efficiency deterioration [1][2][3].These switching inductive converters have gained more interest and are considered most appropriate DC-DC converters when the required power density is high and the efficiency is critical.…”

Section: Introductionmentioning

confidence: 99%

Design and modeling of integrated octagonal shape inductor with substrate silicon in a buck converter

Namoune

Taleb

Mansour

et al. 2019

IJEEI

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The paper discusses the design and modeling of an integrate octagonal shaped inductor with silicon substrate. A validated equivalent electrical model of the integrated octagonal shaped spiral inductor was developed. The model was used to analyze and evaluate the quality factor and the inductance of the inductor structure proposed under different physical parameters setting. These include the number of turns, spacing between turns and the inner diameter. The simulation results show that an appropriate selection of physical parameters can achieve an enhanced quality factor and improved inductance. PSIM simulator was used for the implementation of the integrated inductor in a micro buck converter. The simulation results demonstrate that our proposals are very promising approaches for the monolithic integration of DC-DC converters.

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Section: Introductionmentioning

confidence: 99%

Design and modeling of integrated octagonal shape inductor with substrate silicon in a buck converter

Namoune

Taleb

Mansour

et al. 2019

IJEEI

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“…On account of its obvious advantages, such as the flexibility to implement complicated control strategies and algorithms, the programmability to realize reconfigurable power systems, faster design process, high power conversion efficiency, robustness to noise, and insensitivity to parameter drifts of components, the digitally controlled DC-DC switching converter has gained a great deal of attention in the fields of power electronics and integrated circuits [1]- [20]. In order to improve the transient response features and to reduce the sizes of the passive filter components (inductor and capacitor), the switching frequency of the DC-DC converter is ever-increased.…”

Section: Introductionmentioning

confidence: 99%

Digitally Current Controlled DC-DC Switching Converters Using an Adjacent Cycle Sampling Strategy

Wei¹,

Wang²,

Li³

et al. 2016

Journal of Power Electronics

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A novel digital current control strategy for digitally controlled DC-DC switching converters, referred to as Adjacent Cycle Sampling (ACS), is proposed in this paper. For the ACS current control strategy, the available time interval from sampling the current to updating the duty ratio, is approximately one switching cycle. In addition, it is independent of the duty ratio. As a result, the contradiction between the processing speed of the hardware and the transient response speed can be effectively relaxed by using the ACS current control strategy. For digitally controlled buck DC-DC switching converters with trailing-edge modulation, digital current control algorithms with the ACS control strategy are derived for three different control objectives. These objectives are the valley, average, and peak inductor currents. In addition, the sub-harmonic oscillations of the above current control algorithms are analyzed and eliminated by using the digital slope compensation (DSC) method. Experimental results based on a FPGA are given, which verify the theoretical analysis results very well. It can be concluded that the ACS control has a faster transient response speed than the time delay control, and that its requirements for hardware processing speed can be reduced when compared with the deadbeat control. Therefore, it promises to be one of the key technologies for high-frequency DC-DC switching converters.

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“…The dynamic voltage and frequency-scaling (DVFS) technique [1]- [3] saves power consumption in SoC systems and provides high and low output voltages. For DVFS applications in mobile systems [4]- [6], the LDO is one of the optimal supply voltage principle of operation is compared the difference of V ref and V fb . The LDO uses analog signals to control power MOS to operate in the saturation or linear regions.…”

Section: Introductionmentioning

confidence: 99%

Low-Power Fast-Settling Low-Dropout Regulator Using a Digitally Assisted Voltage Accelerator for DVFS Application

Yang

Wang

Chang

et al. 2013

AMM

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This paper presents a low-power fast-settling low-dropout regulator (LDO) using a digitally assisted voltage accelerator. Using the selectable-voltage control technique and digitally assisted voltage accelerator significantly improves the transition response time within output voltage switched. The proposed LDO regulator uses the selectable-voltage control technique to provide two selectable-voltage outputs of 2.5 V and 1.8 V. Using the digitally assisted voltage accelerator when the output voltage is switched reduces the settling time. The simulation results show that the settling time of the proposed LDO regulator is significantly reduced from 4.2 ms to 15.5 μs. Moreover, the selectable-voltage control unit and the digitally assisted voltage accelerator of the proposed LDO regulator consume only 0.54 mW under a load current of 100 mA. Therefore, the proposed LDO regulator is suitable for low-power dynamic voltage and frequency-scaling applications.

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A Highly Integrated Power Management IC for Advanced Mobile Applications

Cited by 88 publications

References 7 publications

Design and modeling of integrated octagonal shape inductor with substrate silicon in a buck converter

Design and modeling of integrated octagonal shape inductor with substrate silicon in a buck converter

Digitally Current Controlled DC-DC Switching Converters Using an Adjacent Cycle Sampling Strategy

Low-Power Fast-Settling Low-Dropout Regulator Using a Digitally Assisted Voltage Accelerator for DVFS Application

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