Analysis and Implementation of a DC-DC Converter with an Active Snubber

Lin, Bor‐Ren; Li, Lin

doi:10.6113/jpe.2011.11.6.779

Cited by 3 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In above equations, t f main and t f aux are fall time of the main and auxiliary switches, respectively, and durations 3 , 5 , 6 , 7 are given in (13), (17), (19), and (23), respectively.…”

Section: Design Proceduresmentioning

confidence: 99%

“…(c) There should be no additional current stress on the switches or it should be reduced as much as possible. In the literature, there are various soft switching isolated PWM DC-DC converter or inverter designs [6,[8][9][10][11][12][13][14][15][16][17][18][19][20]. However, most of them lack at least one of the features mentioned above.…”

Section: Introductionmentioning

confidence: 99%

“…In [8][9][10][11][12][13], there is too much conduction loss occurring especially in high output current applications because of the auxiliary power devices used on the secondary side. In [14][15][16][17], the switches suffer from additional voltage stresses. In [15,16,18], the resonant inductor current is higher than the nominal current and the auxiliary switch has additional current stress.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

New active snubber cell for high power isolated PWM DC–DC converters

Yeşilyurt¹,

Bodur²

2019

IET Circuits, Devices & Systems

View full text Add to dashboard Cite

Here, a new active snubber cell for high-power isolated pulse-width-modulated (PWM) DC-DC converters is proposed. All semiconductor power devices in the proposed converters operate with full soft switching under a very wide load range, and they are not exposed to any voltage and current stress. The main switches turn on with zero-voltage transition (ZVT) and turn off with zero-voltage switching (ZVS). The auxiliary switches turn on with zero-current switching (ZCS) and turn off with ZVS. The theoretical analysis and design procedure for the proposed active snubber cell are carried out in detail and are verified with a half-bridge (HB) converter implementation having 20V output voltage, 50 A output current, and 80 kHz switching frequency. The overall efficiency of the HB DC-DC converter is increased from about 83% in the hard switching condition to about 90% thanks to the proposed active snubber cell.

show abstract

“…In above equations, t f main and t f aux are fall time of the main and auxiliary switches, respectively, and durations 3 , 5 , 6 , 7 are given in (13), (17), (19), and (23), respectively.…”

Section: Design Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

New active snubber cell for high power isolated PWM DC–DC converters

Yeşilyurt¹,

Bodur²

2019

IET Circuits, Devices & Systems

View full text Add to dashboard Cite

show abstract

“…1. The advantages of the push-pull resonant converters include their low component count and their ability to operate under zero voltage switching (ZVS) and zero current switching (ZCS) conditions [9], [10]. These advantages result in a higher overall system efficiency.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Implementation of a Half Bridge Class-DE Rectifier for Front-End ZVS Push-Pull Resonant Converters

Ekkaravarodome¹,

Jirasereeamornkul²

2013

Journal of Power Electronics

View full text Add to dashboard Cite

An analysis of the junction capacitance in resonant rectifiers which has a significant impact on the operating point of resonance circuits is studied in this paper, where the junction capacitance of the rectifier diode is to decrease the resonant current and output voltage in the circuit when compared with that in an ideal rectifier diode. This can be represented by a simplified series resonant equivalent circuit and a voltage transfer function versus the normalized operating frequency at varied values of the resonant capacitor. A low voltage to high voltage push-pull DC/DC resonant converter was used as a design example. The design procedure is based on the principle of the half bridge class-DE resonant rectifier, which ensures more accurate results. The proposed scheme provides a more systematic and feasible solution than the conventional resonant push-pull DC/DC converter analysis methodology. To increase circuit efficiency, the main switches and the rectifier diodes can be operated under the zero-voltage and zero-current switching conditions, respectively. In order to achieve this objective, the parameters of the DC/DC converter need to be designed properly. The details of the analysis and design of this DC/DC converter's components are described. A prototype was constructed with a 62-88 kHz variable switching frequency, a 12 V DC input voltage, a 380 V DC output voltage, and a rated output power of 150 W. The validity of this approach was confirmed by simulation and experimental results.

show abstract

“…To achieve high circuit efficiency, light weight and a compact size, power converters with soft-switching techniques [5]- [17] have been developed for more than twenty years. Active clamped converters [5]- [8], full-bridge phase-shift converters [9]- [10] and series resonant converters [11]- [13] have been developed to achieve zero voltage switching (ZVS) turn-on for switches. The active-clamping topology is one kind of soft switching technique to achieve ZVS turn-on by utilizing the energy stored in the leakage and magnetizing inductances.…”

Section: Introductionmentioning

confidence: 99%

Analysis, Design and Implementation of an Interleaved DC/DC Converter with Series-Connected Transformers

Lin¹,

Chen²

2012

Journal of Power Electronics

Self Cite

View full text Add to dashboard Cite

An interleaved DC/DC converter with series-connected transformers is presented to implement the features of zero voltage switching (ZVS), load current sharing and ripple current reduction. The proposed converter includes two half-bridge converter cells connected in series to reduce the voltage stress of the switches at one-half of the input voltage. The output sides of the two converter cells with interleaved pulse-width modulation are connected in parallel to reduce the ripple current at the output capacitor and to achieve load current sharing. Therefore, the size of the output chokes and the capacitor can be reduced. The output capacitances of the MOSFETs and the resonant inductances are resonant at the transition instant to achieve ZVS turn-on. In addition, the switching losses on the power switches are reduced. Finally, experiments on a laboratory prototype (24V/40A) are provided to demonstrate the performance of the proposed converter.

show abstract

Analysis and Implementation of a DC-DC Converter with an Active Snubber

Cited by 3 publications

References 16 publications

New active snubber cell for high power isolated PWM DC–DC converters

New active snubber cell for high power isolated PWM DC–DC converters

Analysis and Implementation of a Half Bridge Class-DE Rectifier for Front-End ZVS Push-Pull Resonant Converters

Analysis, Design and Implementation of an Interleaved DC/DC Converter with Series-Connected Transformers

Contact Info

Product

Resources

About