Resonant Push–Pull Converter With Flyback Regulator for MHz High Step-Up Power Conversion

Wang, Chang; Li, Mingxiao; Ouyang, Ziwei; Wang, Gang

doi:10.1109/tie.2020.2969109

Cited by 23 publications

(12 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The energy can be stored either in magnetic components as single/coupled inductor or in electric field components as capacitors by active or passive power switching elements. Step-up DC-DC converters are used in portable device applications, aerospace, satellite application, hybrid electric vehicles, and photovoltaic systems [2]- [5].…”

Section: Introductionmentioning

confidence: 99%

Step-Up DC-DC Switching Converter With Single Switch and Multi-Outputs Based on Luo Topology

2022

View full text Add to dashboard Cite

In this paper, a step-up DC-DC multi-output converter is introduced by integrating a super-lift Luo converter, flyback topology, and coupled inductor concept. The proposed multi-output converter has positive output super-lift structure while simultaneously generating step-up voltages in its outputs. The proposed step-up converter has two non-isolated and one isolated output with a simple structure using one switch and one magnetic core. There is no voltage spike by the leakage inductance of the coupled inductor across the switch in the proposed converter. Therefore, the switch has low-stress voltage. The energy in the leakage inductor is recycled leading to higher efficiency in comparison to similar converters with the coupled inductor. The operating principles and the characteristics of the proposed converter are analyzed and discussed. The experimental results of 110W prototype verify the theoretical analysis and the benefits of the proposed converter in comparison to similar multi-output converters. The conducted electromagnetic interference evaluation of the proposed converter is presented and it is reduced using a common-mode choke.

show abstract

Section: Introductionmentioning

confidence: 99%

Step-Up DC-DC Switching Converter With Single Switch and Multi-Outputs Based on Luo Topology

2022

View full text Add to dashboard Cite

show abstract

“…The PP converter can be divided into current‐fed [10–15] and voltage‐fed topologies [11–34]. For current‐fed topologies, the filter inductor of the converter is placed on the primary side of the HF transformer, and the leakage inductor of the HF transformer is used to take part in the energy transfer, which results in the inductor cannot being opened when the converter operates in a current continuous mode (CCM).…”

Section: Introductionmentioning

confidence: 99%

“…It is worth mentioning that the conventional current‐fed and voltage PP converters suffer from the hard‐switched resulting in a number of switching losses and high turn‐off voltage spike due to transformer leakage inductance. In order to overcome these obstacles, a large number of improved topologies with zero‐voltage switching (ZVS) [10–12,16–34], zero‐current switching (ZCS) [13–11], voltage spike clamping, and suppression [28–34], have been proposed and developed in the past literature.…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of a wide range ZVS/ZCS push–pull DC/DC converter with voltage clamped

Xiao

Heng

2022

IET Power Electronics

View full text Add to dashboard Cite

A new isolated zero‐voltage switching (ZVS)/zero‐current switching (ZCS) push–pull (PP) DC/DC converter is presented. One auxiliary switch S3 and a clamping capacitor Cc are introduced at the primary of the conventional push–pull converter and a voltage doubler‐rectifier is adopted on the secondary side. This proposed converter has the features: (1) Switching losses are reduced significantly owing to zero‐voltage switching of primary switches and zero‐current switching of secondary diodes over a wide load range variation. (2) The voltage spike across all of the power devices can be clamped that enable the use of low‐voltage, low‐performance, and lower‐cost devices. (3) The energy stored in the transformer leakage inductance is used for the soft‐switching action and no additional resonant inductor is required. (4) A voltage doubler‐rectifier is employed to remove the problem of the diode reverse‐recovery effect and reduce the duty cycle loss that provides a much higher voltage conversion ratio. These merits make this simple converter provide an attractive solution for a distributed power system, uninterruptible power system, or battery charge/discharge system. The detailed operation, analysis, design, comparative study, and experimental results for the proposed converter are presented and a 600 W prototype was developed to verify the discussed theoretical analysis.

show abstract

“…The resonant push-pull converter and related topologies have been intensively investigated, analyzed, and continuously improved in the last decades due to the advantages regarding the capability of high switching frequencies, simple design, and low losses [21]- [36]. Thereby, the applied pushpull topologies and the necessary resonant circuits have been adapted to the individual requirements of various applications [21]- [26]. Commonly, the push-pull topology is used in a current-fed configuration, but the dc inductor requires considerable space and also slows down the transient response of the converter, hampering the implementation of an on/offcontrol [36].…”

Section: Introductionmentioning

confidence: 99%

A Resonant Push–Pull DC–DC Converter With an Intrinsic Current Source Behavior for Radio Frequency Power Conversion

Weitz

Utzelmann

Ditze

et al. 2022

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

In this work, a resonant push-pull dc-dc converter suitable for switching frequencies in the MHz-range is investigated. Despite a simple design procedure with no need of multiresonant tuning, the converter topology is capable of providing a constant output current over a wide output voltage range in unregulated operation. Based on an analytical solution of steady-state operation, normalized dependencies of converter behavior are determined and used to formulate generalized design considerations. In order to verify the theoretical analysis, the design procedure of a 300 W prototype operating at a switching frequency of 6.78 MHz is described considering the impact of circuit parasitics on converter operation. The prototype provides a stable operation within the full output voltage range of 0-150 V and reaches a peak efficiency of 93% at the nominal output voltage. A rapid transient response of the converter is demonstrated by applying a closed-loop on/off-control to the prototype.

show abstract

Resonant Push–Pull Converter With Flyback Regulator for MHz High Step-Up Power Conversion

Cited by 23 publications

References 33 publications

Step-Up DC-DC Switching Converter With Single Switch and Multi-Outputs Based on Luo Topology

Step-Up DC-DC Switching Converter With Single Switch and Multi-Outputs Based on Luo Topology

Analysis and design of a wide range ZVS/ZCS push–pull DC/DC converter with voltage clamped

A Resonant Push–Pull DC–DC Converter With an Intrinsic Current Source Behavior for Radio Frequency Power Conversion

Contact Info

Product

Resources

About