2018
DOI: 10.1049/iet-pel.2017.0360
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Half‐bridge flyback converter with lossless passive snubber and interleaved technique

Abstract: Hard-switching flyback converters are widely used in the low power application but suffer from high electromagnetic emissions, current ripples, and low efficiency. To overcome these problems, a half-bridge flyback converter with a new lossless passive snubber is proposed using an interleaved structure. All switches of the proposed converter turn on under zero current switching and turn off under zero voltage switching which decreases the switching losses and electromagnetic interference (EMI). Theoretical anal… Show more

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Cited by 16 publications
(9 citation statements)
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“…where ω 1 is the resonance frequency of mode 4 and is presented in (6). L eq and C eq are the equivalent inductor and capacitor which are defined by (7) and (8), respectively. The coefficients A 1 , B 1 , and C 1 are obtained from (9)-(11), respectively.…”
Section: Operation Principles Of Interleaved Boost Converter With Thementioning
confidence: 99%
See 1 more Smart Citation
“…where ω 1 is the resonance frequency of mode 4 and is presented in (6). L eq and C eq are the equivalent inductor and capacitor which are defined by (7) and (8), respectively. The coefficients A 1 , B 1 , and C 1 are obtained from (9)-(11), respectively.…”
Section: Operation Principles Of Interleaved Boost Converter With Thementioning
confidence: 99%
“…However, the rise of switching losses and electromagnetic interference are two major drawbacks of operating at high switching frequencies. In order to overcome these problems, several types of active and passive soft switching techniques are introduced in literature [7][8][9][10][11][12]. Zero voltage transition (ZVT) technique [9][10][11][12] is an active soft switching method which is very popular since it can effectively eliminate switching and capacitive turn on losses while the converter control stays at pulse width modulation.…”
Section: Introductionmentioning
confidence: 99%
“…In some applications, isolated converters are chosen to meet the safety standards, provide galvanic isolation, and enhance noise immunity. Flyback converter as a conventional isolated step-up converter is used in low power applications together with multiple outputs due to the low number of elements, modest construction, and low cost [6]. In [7], an integrated topology with flyback converter in a single-stage structure is presented to suggest flexible step-up DC-DC converters.…”
Section: Introductionmentioning
confidence: 99%
“…The achievement of high power levels and reduction of overall dimensions has led to the conception of distinct power electronic converter topologies . In this context, the operation at high switching frequencies is essential to achieve reduced dimensions associated to high power density, as it leads to reduced size, weight, and volume of filter elements such as capacitors and inductors, as well as transformers.…”
Section: Introductionmentioning
confidence: 99%
“…The achievement of high power levels and reduction of overall dimensions has led to the conception of distinct power electronic converter topologies. 1 In this context, the operation at high switching frequencies is essential to achieve reduced dimensions associated to high power density, as it leads to reduced size, weight, and volume of filter elements such as capacitors and inductors, as well as transformers. However, the switching frequency cannot be increased indefinitely in practice due to electromagnetic interference (EMI) issues, physical limitations of semiconductors, and high switching losses that affect overall efficiency.…”
Section: Introductionmentioning
confidence: 99%