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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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AN3400 Fiches technique(PDF) 39 Page - STMicroelectronics |
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AN3400 Fiches technique(HTML) 39 Page - STMicroelectronics |
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39 / 78 page  AN3400 Modeling of re-circulating phase preliminary to the NPN conduction time phase Doc ID 018840 Rev 1 39/78 signal opportunely modeled in order to take into consideration the effect of demagnetization current for the inductor Lp. Also in this case, for the NPN bipolar base current IBnpn, the formula below is valid during the whole re-circulating phase preliminary to the NPN conduction time phase: Equation 9 in which is a discharging voltage on the Cp capacitor (that is ). () () ( ) () () () ()t V dt d C t V dt d C t I t I t I npnric Cp npnric Cn npnric Cp npnric Cn Bnpn − − − − ⋅ − ⋅ = + = ()t V npnric Cp − () () 0 t V dt d npnric Cp < − |
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