The RCD snubber revisited

@article{Finney1993TheRS,
  title={The RCD snubber revisited},
  author={Stephen J. Finney and Barry W. Williams and Timothy C. Green},
  journal={Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting},
  year={1993},
  pages={1267-1273 vol.2}
}
The use of the polarized RCD (resistor-capacitor-diode) turn-off snubber configuration across switching devices is popular because of its simplicity and use of only passive components. This configuration is limited by the fact that all capacitor-stored energy is dissipated in the discharge resistor. In the present work, it is shown that, with the addition of a ferrite transformer to the standard RCD arrangement, in excess of 70% of the energy stored on the snubber capacitor may be passively… CONTINUE READING

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