150 watts switched mode power supply for personal computers applications with power factor correction

Martinez, A.; Abud, D.; Arau, J.

doi:10.1109/ciep.1994.494394

Cited by 4 publications

(2 citation statements)

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“…[1–4]. Personal computer (PC) is one such major appliance that requires stringently regulated different dc voltages and current ratings to power up its different parts [5, 6]. Rather than using multiple number of dc–dc converters for regulating voltage of each of the outputs in an SMPS, the reliability and cost‐effectiveness can be improved if a single dc–dc converter is used and a viable control technique is employed to regulate the different voltages effectively.…”

Section: Introductionmentioning

confidence: 99%

Power factor correction in switched mode power supply for computers using canonical switching cell converter

Singh

Bist

Singh

et al. 2015

IET Power Electronics

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This study presents a novel power factor correction (PFC) technique using a canonical switching cell (CSC) converter applicable to multi-output switched mode power supply (SMPS) used in personal computers (PCs). The CSC converter at the front end of this single-phase fed SMPS operates in discontinuous conduction mode that offers inherent PFC for wide range of varying input voltages. It is cascaded to an isolated half-bridge multi output dc-dc converter for obtaining multiple dc voltages that are stiffly regulated and isolated from each other as per the requirement of the PC. The proposed SMPS is designed, modelled and its performance is investigated under steady state and dynamic operating conditions for varying input voltages and loads. It is found that the proposed design is able to offer excellent power factor and low total harmonics distortion at the utility interface as shown in investigations carried on simulation and experimental studies. A comparison of conventional SMPS with proposed PFC-based SMPS vividly brings out the merits of the latter. Further, a comparison is made with other types of front end converters to investigate the relative merits and demerits of the CSC converter over other front end converters.

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Section: Introductionmentioning

confidence: 99%

Power factor correction in switched mode power supply for computers using canonical switching cell converter

Singh

Bist

Singh

et al. 2015

IET Power Electronics

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“…This arrangement has been done to obtain a good PF with very fast output dynamics and a reduction in sensor requirement besides improved input power quality. The design of a computer power supply in two stages is proposed with improved PF, low THD and low cost where a boost converter is used as the first stage while multi output single switch tlyback converter is used for the second stage [9]. The use of non isolated PFC converters in the front end of these power supplies is a better solution to achieve acceptable power quality at varying input voltage and load [10] [11].…”

Section: Introductionmentioning

confidence: 99%

Power quality improved hybrid SMPS for PC applications

Joy

2015

2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)

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Many electronic appliances consume standby power, which as per IEC definition is the equipments' lowest level of power intake while in switched on but idle state. The users of these devices are often unaware of such continuous power drain. Computers, that enable better productivity and accuracy, are in common use today. Personal Computers (PC) need stable power inputs that can deliver rigidly regulated and isolated DC outputs of high power quality at different levels. However, the standby power associated with Personal Computers is substantial. Therefore, the primary objective of the project is to develop a Switch Mode Power Supply (SMPS) that integrates with a battery that is charged by solar energy. The battery provides standby power of the requisite quality to the Pc. Power factor is improved using buck-boost PFC converter in Discontinuous Conduction Mode at the front end. A half bridge converter has been used at the output end for achieving high frequency isolation and multiple DC output voltages. Such a configuration is considered a better solution to obtain the power quality needed in situations of varying input and load fluctuations conditions. Simulation of the suggested model implemented in Matlab/Simulink Software has demonstrated improved performance for the proposed Hybrid SMPS.

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