Abstract: A system for overcurrent threshold correction in an ignition system. The system includes a control circuit and a current detection circuit. The control circuit has a first and second output. The first output of the control circuit charges a first ignition coil, the second output of the control circuit charges a second ignition coil. The overcurrent detection circuit adjusts the detection of an overcurrent condition, when the charging of the first coil overlaps with the charging of the second coil. Further, the control circuit is in communication with the overcurrent detection circuit to disable the first and second output, when the overcurrent condition is detected.

Abstract: In satisfying the above need, as well as overcoming the enumerated drawbacks and other limitations of the related art, the present invention provides an improved switched driver circuit. As disclosed above, there is a need to compensate for the high impedance load characteristics in certain implementations of hysteretic switching constant current drivers. The switching waveform of switching constant current driver circuits may be modified in such a way that retains the important dither characteristics and improves system level performance.