Design and verification of an integrated current mode switching regulator

2011 ◽  
Author(s):  
Chun-Sheng Huang ◽  
Chien-Hung Tsai ◽  
Jia-Hui Wang
Keyword(s):  
Current Mode ◽  
Mode Switching ◽  
Switching Regulator

Current Sensing Circuit Applied to Switching Regulator

2013 ◽  
Vol 328 ◽  
pp. 1017-1020
Author(s):  
Hong Xing Feng
Keyword(s):  
Power Management ◽  
Voltage Drop ◽  
Current Mode ◽  
Mode Switching ◽  
Current Sensing ◽  
Tablet Pcs ◽  
Power Switch ◽  
Switching Regulator ◽  
Series Resistor ◽  
A Current

A current sensing circuit for current mode switching regulator control circuit is designed, sensing the current through a power switch. Compared with sensing series resistor voltage drop, it reduces the power consumption of a switching regulator, improves efficiency, and sense smaller inductor current. This structure can be used in devices such as mobile phones, tablet PCs power management circuitry.

scholarly journals Switching time estimation and active mode recognition using a data projection method

2016 ◽  
Vol 26 (4) ◽  
pp. 827-840 ◽  
Author(s):  
Assia Hakem ◽  
Vincent Cocquempot ◽  
Komi Midzodzi Pekpe
Keyword(s):  
Fault Detection ◽  
Projection Method ◽  
Switching Time ◽  
Time Estimation ◽  
Current Mode ◽  
Mode Switching ◽  
Detection And Identification ◽  
Precise Knowledge ◽  
Fault Detection And Identification ◽  
Parameter Values

Abstract This paper proposes a data projection method (DPM) to detect a mode switching and recognize the current mode in a switching system. The main feature of this method is that the precise knowledge of the system model, i.e., the parameter values, is not needed. One direct application of this technique is fault detection and identification (FDI) when a fault produces a change in the system dynamics. Mode detection and recognition correspond to fault detection and identification, and switching time estimation to fault occurrence time estimation. The general principle of the DPM is to generate mode indicators, namely, residuals, using matrix projection techniques, where matrices are composed of input and output measured data. The DPM is presented in detail, and properties of switching detectability (fault detectability) and discernability between modes (fault identifiability) are characterized and discussed. The great advantage of this method, compared with other techniques in the literature, is that it does not need the model parameter values and thus can be applied to systems of the same type without identifying their parameters. This is particularly interesting in the design of generic embedded fault diagnosis algorithms.

scholarly journals Quantifying the Nonlinear Dynamic Behavior of the DC-DC Converter via Permutation Entropy

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2747 ◽  
Author(s):  
Zhenxiong Luo ◽  
Fan Xie ◽  
Bo Zhang ◽  
Dongyuan Qiu
Keyword(s):  
Direct Current ◽  
Nonlinear Dynamic ◽  
Current Mode ◽  
Buck Converter ◽  
Mode Switching ◽  
Permutation Entropy ◽  
Nonlinear Phenomena ◽  
Dynamic Features ◽  
Switching Mode ◽  
Complex Phenomena

Quantifying nonlinear dynamic behaviors, such as bifurcation and chaos, in nonlinear systems are currently being investigated. In this paper, permutation entropy is used to characterize these complex phenomena in nonlinear direct current-direct current (DC-DC) converter systems. A mode switching time sequence (MSTS), containing the information from different periodic states, is obtained in a DC-DC converter by reading the inductor current when altering the switching mode. To obtain the nonlinear characteristics of this system, the concept of permutation entropy of symbolic probability distribution properties is introduced and the structure of the chaotic system is reproduced based on the theory of phase space reconstruction. A variety of nonlinear dynamic features of the DC-DC converter are analyzed using the MSTS and permutation entropy. Finally, a current-mode-controlled buck converter is reviewed as a case to study the quantification of nonlinear phenomena using permutation entropy as one of the system parameters changes.

scholarly journals Influence of the reconstruction filter on the performance of a switched-mode power amplifier

2013 ◽  
Vol 26 (1) ◽  
pp. 1-10
Author(s):  
Elena Serebryakova ◽  
Kurt Blau ◽  
Matthias Hein
Keyword(s):  
Power Amplifier ◽  
Current Mode ◽  
Input Resistance ◽  
Mode Switching ◽  
Pass Band ◽  
Constant Input ◽  
Measurement Results ◽  
Reconstruction Filter ◽  
Experimental Approaches ◽  
Parasitic Components

This paper presents an analysis of a reconstruction filter in a switched mode power amplifier system. Doubly and singly terminated filters for current-mode class-S power amplifiers were analyzed previously through analytical, numerical, and experimental approaches, and it was shown that only singly terminated filters can fulfill the requirements of current-mode switching amplifiers, owing to their constant input resistance over the pass-band. In this paper potential effects of the parasitic components in the actual filters and the filter termination are evaluated. The simulation and measurement results of current mode class-S power amplifier systems employing GaN HEMT MMICs are presented and critically analyzed.

scholarly journals Properties of individual and integrated pulses drawn into mode changing phenomenon in PSR 0943+10 at 40, 103 and 430 MHz

1996 ◽  
Vol 160 ◽  
pp. 223-224
Author(s):  
S.A. Suleymanova ◽  
V.A. Izvekova ◽  
J.M. Rankin
Keyword(s):  
Current Mode ◽  
Transition Process ◽  
Mode Switching ◽  
Frequency Range ◽  
Broad Frequency Range ◽  
Pulse Intensity ◽  
Switching Phenomenon

AbstractPulsar 0943+10 demonstrates very obviously that the mode switching phenomenon includes simultaneous and dramatic alterations of all principal properties of radioemission, i.e. intensity, polarization (both linear and circular) and drifting behaviour of individual pulses over a broad frequency range. On the basis of observations of PSR 0943+10 at the frequencies 40 and 430 MHz, a complete scenario of the transition process between two modes of radiation has been revealed. The ‘pre-switching transition process’ is found which manifests itself as attenuation of the pulse intensity of the current mode during hundreds of the pulse periods preceding a switch.

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