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RCD snubber

Abstract: calculation of IGBT snubber (V«^) for equal to '/j-C-Vp^-4, where Vpk is the voltage across the higher inductance does reach a , /Ijnltotal: 20A/div, Eon: O.SmJ/div VjijclOOV/Div Fig. 10 Shows the effect of changing the snubber resistor , Vdiode lOOns/div Figure 10. Effect of changing Rsn values. Tested «: 400V, IOOA, 2VC; Lj - 240nH , . The voltage overshoot was brought down to only 10 V from 190 V Note that this circuit increases the , conditions. From (g), (h) & (i), 'sniO = Isn »[Ls-O^Vtrl/Rsn Isn = 0>LS-10 / (tr â'¢ R^)-(j) The losses
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