Half bridge circuit arrangement protecting device, has filters and flip flops that disconnect control logic when determining overload during certain time period within one branch and disconnect switch

摘要

The device has a half bridge with two branches and detector units measuring an overload. A control logic controls switches (M1, M2) based on output signals of the units such that the overloaded switch is isolated for a certain time period if an overload threshold exceeds in the branches. Filters and flip flops disconnect the logic when determining the overload during the period within one of the branch and disconnect the switch (M2).