Active-Clamp Snubbers for Isolated Half-Bridge DC–DC Converters

Miao, Hong; Deng, Songquan; Abu-Qahouq, J.A.; Batarseh, Issa

doi:10.1109/tpel.2005.857529

Cited by 26 publications

(5 citation statements)

References 9 publications

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“…With the emergence of advanced power devices like Silicon Carbide MOSFETs and CoolMOS superjunction devices, it has become more important to investigate the performance and robustness of the body diodes in switching applications [9], [10]. It has been previously shown that the body diode can be actually be a suitable replacement for the PiN diodes when it comes to soft switching converters such as ZVS [11]- [15]; however, the use of the body diode may create a significant robustness issue when it comes to hard commutation switching [16]- [18]. To overcome this, different MOSFET designs were tested including lateral Power MOSFET [19], [20], VDMOSFT [21], VMOS, LDMOS, TrenchMOS [22], UMOS [23], semi-super-junction [24] and eventually super-junction MOSFETs [25], [26] or CoolMOS [27] all of which although showed certain improvements, but could not help the overall poor reverse recovery performance of the body diodes during hard commutation.…”

mentioning

confidence: 99%

An Analysis of the Switching Performance and Robustness of Power MOSFETs Body Diodes: A Technology Evaluation

Jahdi

Alatise

Bonyadi

et al. 2015

IEEE Trans. Power Electron.

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mentioning

confidence: 99%

An Analysis of the Switching Performance and Robustness of Power MOSFETs Body Diodes: A Technology Evaluation

Jahdi

Alatise

Bonyadi

et al. 2015

IEEE Trans. Power Electron.

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“…Also, active clamp circuits are employed to reduce the voltage spike of the main switch [24], [25]. In [25], an activeclamp snubber, illustrated in Fig. 3, is proposed for half-bridge DC-DC converters.…”

Section: A Snubber and Clampmentioning

confidence: 99%

Classification and Comparison of EMI Mitigation Techniques in Switching Power Converters - A Review

Yazdani¹,

Farzanehfard²,

Faiz³

2011

Journal of Power Electronics

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Power electronic systems such as switching power supplies are accounted as noise sources for other sensitive circuits. EMI caused by power converters can disturb the normal operation of the converter and other adjacent systems. Major research is concentrated on EMI mitigation for power converters in which the main concern is compliance with EMC standards to ensure proper operation of converters and nearby systems. This paper reviews EMI reduction techniques related to switching power converters with emphasis on the conducted EMI. A comprehensive review of significant research works is performed and various methods are thoroughly discussed and compared. Also, a classification of methods is presented. Moreover, converter prototypes are realized which contain several EMI mitigation techniques and their effects are presented via experimental results.

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“…This technique uses turn ratio to achieve a high output voltage and adjust duty cycle to the required voltage. However, an isolated transformer also produce leakage inductance; thus, a clamp circuit is necessary to recycle energy and achieve high efficiency [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

High conversion ratio DC-DC converter with isolated transformer and switched-clamp capacitor for Taiwan photon source

et al. 2017

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A new high step-up voltage converter that combines a switch capacitor and isolated transformer, together with a passive clamp circuit, is employed to reduce voltage stress on the main power switch. The voltage stress of the power switch should be clamped to 1/4 Vo, and the proposed converter can achieve high step-up voltage gain with appropriate duty ratio. The energy of the leakage inductor can be recycled by the clamp capacitor because of the passive clamp circuit, and low On-state resistance RDS(on) of the power switch can be adopted to reduce the conduction loss. In this paper, several mathematical derivations are presented, CCM and DCM operating principle are discussed, and experimental results are provided to verify the effectiveness of converter topology. Finally, a 24-V-input voltage to 200-V-output voltage and a 150 W output power prototype converter are fabricated in the laboratory.

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Active-Clamp Snubbers for Isolated Half-Bridge DC–DC Converters

Cited by 26 publications

References 9 publications

An Analysis of the Switching Performance and Robustness of Power MOSFETs Body Diodes: A Technology Evaluation

An Analysis of the Switching Performance and Robustness of Power MOSFETs Body Diodes: A Technology Evaluation

Classification and Comparison of EMI Mitigation Techniques in Switching Power Converters - A Review

High conversion ratio DC-DC converter with isolated transformer and switched-clamp capacitor for Taiwan photon source

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