Patent ID: 6595194
Filing Date: 2003-07-22
Classification: F02P,H01L,H03K

Abstract:
An ignition system for an internal combustion engine having a power switching unit for controlling to conduct or block a primary current flowing through an ignition coil in response to an input ignition control signal to generate a high voltage on a secondary side of the ignition coil, a current limiter circuit for limiting said primary current, and a connection circuit for connecting a collector and a gate of said power switching unit, wherein said power switching unit and said current limiter circuit are integrated in a monolithic silicon substrate of an insulating gate bipolar power transistor, said ignition system for an internal combustion engine anda path in provided for leading a stray current generated within said monolithic silicon substrate to an emitter of said power switching unit when an input signal to said gate of said power switching unit is an off-state signal.