Synchronous Buck converter with Output Impedance Correction Circuit

Svikovic,; Óliver,; Alou,; Garcia, Jose; Cobos,

doi:10.1109/apec.2012.6165900

Cited by 10 publications

(9 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A small-signal output impedance of DC-DC converter, especially BUCK, is an important characteristic in designing converters applied to supplying modern processors in computer equipment [25][26][27][28]. For derivation of this characteristic, it is assumed, that a dummy current source I out is connected to output terminals of converter and the resulting small-signal term V o of output voltage is calculated.…”

Section: Examples Of Small-signal Transmittances For Ccmmentioning

confidence: 99%

Equivalent circuits for averaged description of DC-DC switch-mode power converters based on separation of variables approach

Janke¹

2013

Bulletin of the Polish Academy of Sciences: Technical Sciences

View full text Add to dashboard Cite

Abstract. Large-signal and small-signal averaged models of basic switch-mode DC-DC power converters: BUCK (step-down) and BOOST (step-up) are presented. Models are derived with the separation of variables approach and have the form of equivalent circuits, suitable for a circuit simulation. Apart from equivalent circuits, small-signal transmittances of converters for CCM and DCM modes are discussed. Parasitic resistances of all components of converters are taken into account. A few examples of simulations and measurement results of selected converter characteristics are also presented. It is shown, that neglecting parasitic resistances (often met in works of other authors) may lead to serious errors in an averaged description of converters.

show abstract

Section: Examples Of Small-signal Transmittances For Ccmmentioning

confidence: 99%

Equivalent circuits for averaged description of DC-DC switch-mode power converters based on separation of variables approach

Janke¹

2013

Bulletin of the Polish Academy of Sciences: Technical Sciences

View full text Add to dashboard Cite

show abstract

“…R L , R C , R T and R D are parasitic resistances of inductor, capacitor and both switches. In many references (for example [10,16,17] and even in the widely known textbook of Erickson and Maksimowic [1]) the output impedance of converters is calculated for the ideal case only, i.e. for the assumption…”

Section: Open-loop Output Impedance Of Buck Convertermentioning

confidence: 99%

Output characteristics of step-down (Buck) power converter

Janke¹,

Bączek²,

Walczak³

2012

Bulletin of the Polish Academy of Sciences: Technical Sciences

View full text Add to dashboard Cite

Abstract. The output characteristics of switched-mode dc-dc buck power converter are discussed. The shape of output characteristics is especially important for converters used for supplying modern processors. An output impedance is usually used for description of output characteristics. Many efforts are described in the literature to obtain the satisfastory features of closed-loop output impedance. Another approach, presented in the paper, is based on the concept of the output voltage response corresponding to the load conductance change, and is expressed by hr transmittance. Simulations of output characteristics of the buck converter in frequency and in time-domain have been performed for the ideal case as well as for a more realistic situation, with the parasitic resistances of converter elements included. The measurement results differ substantially from characteristics calculated for an ideal converter and are in good consistency with simulations including parasitics.

show abstract

“…Many approaches have been implemented to improve this problem. The first type of method involves the use of auxiliary circuits to improve the dynamic response of the original converter [15,16]. Such methods involve the connection of an auxiliary circuit, in [15], it is called the output impedance correction circuit (OICC), which across the input and output ports of the power supply.…”

Section: Introductionmentioning

confidence: 99%

Model following average‐current‐mode control with 1/∛s compensator for interleaved boost converters with improved dynamic response

Liu

Zhang

2017

IET Power Electronics

View full text Add to dashboard Cite

This study presents a model following average-current-mode (MFACM) control using a 1/∛s compensator to improve robustness and dynamic response for multiphase boost converters. The proposed 1/∛s compensator can maintain a constant phase boost of about 60° over two decades, which is attractive from the point of view of stability design when phase margin, gain margin, delay margin and modulus margin are taken into consideration. In addition, the MFACM control is shown to elevate perturbation rejection ability of converters by reducing closed-loop output impedance and closed-loop audio susceptibility, relative to traditional average-current-mode control methods with the almost same crossover frequency. Computer simulations and experimental results using a three-phase interleaved boost converter are shown close agreement between modelled estimates and measured values.

show abstract

Synchronous Buck converter with Output Impedance Correction Circuit

Cited by 10 publications

References 16 publications

Equivalent circuits for averaged description of DC-DC switch-mode power converters based on separation of variables approach

Equivalent circuits for averaged description of DC-DC switch-mode power converters based on separation of variables approach

Output characteristics of step-down (Buck) power converter

Model following average‐current‐mode control with 1/∛s compensator for interleaved boost converters with improved dynamic response

Contact Info

Product

Resources

About