DC/DC converter circuit e.g. for controlling IC engine ignition module, has evaluation stage controlled by output voltage for detecting overload

摘要

The circuit has a DC/DC converter (1) for transformation of an input voltage (UI) into an output voltage (UO) and an evaluation stage (2) for overload detection, coupled to a power limitation stage (3) for limiting the power supplied to the DC/DC converter upon detection of an overload. The evaluation stage is controlled by the output voltage, which is compared with a threshold value, provided by an RC element (R40,R41,C4), for detection of an overload