Method and device for controlling a power output stage

Details Method and device for controlling a power output stage Method and device for controlling a power output stage

H - Electricity

03

K

H03K 17/16 (2006.01) H03K 17/042 (2006.01)

Patent

CA 2353731

The invention relates to a power output stage (T) which is charged with a high charging current (Ig1) in order to effect an electromagnetic interference- compatible control. The power output stage is charged until the drain current (Id) exceeds a current threshold value (Is), is subsequently charged with a lower charging current (Ig2), said lower charging current being associated with the desired slew rate, until the drain voltage (Vd) falls below a predetermined voltage threshold value (Vs), and, afterwards, is subjected to a continual charging with the high charging current(Ig1) for a predetermined duration (Tv). To effect a closing control, the operation is carried out in an almost reversed sequence.

L'invention concerne un disjoncteur (T). Aux fins d'une commande d'ouverture à compatibilité électromagnétique, ce disjoncteur est chargé d'un courant de charge (Ig1) important jusqu'à ce que le courant de drain (Id) dépasse une valeur seuil d'intensité (Is). Ensuite, on continue à la charger par un courant de charge (Ig2) plus faible associé à la vitesse de montée souhaitée jusqu'à ce que la tension de drain (Vd) dépasse par le bas une valeur seuil de tension (Vs) prédéterminée. Enfin on continue à le charger, pendant un temps (Tv) déterminé, par le courant de charge (Ig1) le plus élevé. Aux fins d'une commande de fermeture, on réalise ces opérations dans l'ordre quasiment inverse.

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