Power line filter design considerations for DC-DC converters

Mitchell, Dann

doi:10.1109/2943.798333

Cited by 45 publications

(17 citation statements)

References 6 publications

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“…This is not addressed in this paper, but further studies are planned in the future. The stability boundary of the input filter [4] can be computed using the denominator of the output impedance of the input filter including the negative incremental equivalent resistor [10], [11], [31], resulting in (35) Assuming that the duty ratio does not exceed the nominal duty cycle of 0.2778, the stability condition for the input filter equals F ( ) without damping. The damping will naturally lower this value, but it is not considered further.…”

Section: Output Dynamicsmentioning

confidence: 99%

“…The parameter values of the basic converter are: H, F, m , m , kHz, , and A. The input filter is designed using the methods presented in [10] and [12], resulting in the use of H and F. The input-line losses are estimated based on ETSI specifications [37], resulting in . The equivalent series resistance (ESR) of is chosen to be 5 m .…”

Section: Small-signal Models For a Buck Convertermentioning

confidence: 99%

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Input filter interactions in peak-current-mode-controlled buck converter operating in CICM

Suntio

Gadoura²,

Zenger³

2002

IEEE Trans. Ind. Electron.

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Peak-current-mode (PCM) control is a widely used method to control switched-mode converters. Most often an input filter is necessary to meet electromagnetic interference requirements. The input filter can cause instability and degradation of input and output dynamics if not properly designed. The input filter design from the output dynamics viewpoint has been addressed in numerous papers, resulting in well-agreed results in the case of direct duty-ratio control. The same methods and criteria have also been applied to PCM control, but the results have turned out to be conflicting. This paper shows that the adverse effect of the input filter on the output performance of a peak-current-controlled buck converter in continuous inductor-current mode is insignificant. The input performance is, however, significantly affected, necessitating the use of proper damping. It is also shown that the instability is caused solely by the instability of the input filter under negative incremental resistance. The methods used are unified in nature, but the results obtained in this study cannot be generalized to be valid for types of converters other than a buck converter.Index Terms-Buck converter, continuous inductor current mode, input filter, input and output dynamics, peak-current-mode control.

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Section: Output Dynamicsmentioning

confidence: 99%

Section: Small-signal Models For a Buck Convertermentioning

confidence: 99%

Input filter interactions in peak-current-mode-controlled buck converter operating in CICM

Suntio

Gadoura²,

Zenger³

2002

IEEE Trans. Ind. Electron.

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“…Switched-mode converter inherently produces unwanted high frequency ripple that causes electromagnetic interference [1]. In order to limit the electromagnetic interference an input filter is used to decouple the converter from rest of the system.…”

Section: Introductionmentioning

confidence: 99%

Input filter damping without external passive components

Hiltunen

Väisänen

Silventoinen

2014

2014 16th European Conference on Power Electronics and Applications

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“…Problems arising from this interaction are common in power electronic systems. In the past, much attention has been given to the analysis and mitigation of such interactions in DC systems [4], [5], [6]. Problems can also occur, however, when PFC converters are placed in AC systems.…”

Section: Introductionmentioning

confidence: 99%

Using input condition monitoring to improve the stability of digitally controlled power factor correcting converters

Tran

Cox

Anderson

2010

2010 IEEE 12th Workshop on Control and Modeling for Power Electronics (COMPEL)

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An adaptive controller for a PFC converter is proposed and demonstrated. This controller is applied to a converter with a boost topology operating in continuous conduction mode with average current control. The compensator adjusts a variable gain in the current loop so as to counteract the effects of the time-varying source impedance and input voltage. Experimental results verify that the proposed controller improves the stability of the interaction between the converter and a non-ideal source.

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Power line filter design considerations for DC-DC converters

Cited by 45 publications

References 6 publications

Input filter interactions in peak-current-mode-controlled buck converter operating in CICM

Input filter interactions in peak-current-mode-controlled buck converter operating in CICM

Input filter damping without external passive components

Using input condition monitoring to improve the stability of digitally controlled power factor correcting converters

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