Patent ID: 6621301
Filing Date: 2003-09-16
Classification: H04L

Abstract:
A bus driver circuit for a two-conductor bus system to which are connected a control unit containing the bus driver circuit and at least one of a plurality of actuator modules and a plurality of sensor modules in a motor vehicle, the bus driver circuit feeding a pulse train signal formed by different voltage levels into a healthy bus conductor of the two-conductor bus system in the event of a short circuit on one of the two bus conductors, the bus driver circuit comprising:a plurality of electrically controllable switches forming an H-bridge configuration containing five H-bridge branches, wherein: at least one of the plurality of electrically controllable switches is present in each of the five H-bridge branches, the two bus conductors are each connected to one end of a shunt arm of the H-bridge configuration, and individual ones of the plurality of electrically controllable switches in longitudinal branches of the H-bridge configuration are switchable to at least two positions that are at different voltage levels.