Continental Automotive Gmbh

Continental Automotive France

Vitesco Technologies Gmbh

Aurore Desgeorge

Jean-Pierre Delcol

Alfons Fisch

Andreas Wunderlich

The disclosure provides a device for operating an electronic system. The device includes a power supply unit that, during operation, provides a supply voltage on a supply potential output. The power supply unit has an enable input via which the supply voltage can be enabled and disabled by an enable signal. In a power-latch phase of the electronic system in which the enable signal is not present, the power supply unit provides the supply voltage upon receiving a trigger signal even when the enable signal is not present. The device includes a microcontroller supplied with the supply voltage on a second supply potential input connection when the enable signal is present or when the microcontroller, in the power-latch phase, generates the trigger signal and transmits it to the trigger signal input. Upon receiving a control command, the power supply unit suppresses deactivation of the supply voltage for supplying the microcontroller.

Device for operating an electronic system of a vehicle

A voltage regulation system, particularly for a motor vehicle, adapted to be connected to a voltage source in order to provide a regulated voltage Vto at least one functional component F, the regulation system including a pre-regulator adapted to be connected to a voltage source and a regulator REG including at least one pre-regulation port Padapted to be connected to the pre-regulator and one functional port Padapted to be connected to a functional component, the regulator including an adaptation device Q directly connecting the pre-regulation port to the functional port of the regulator, the adaptation device consisting of a single MOS power transistor including a drain D, a source S and a gate G. The MOS transistor includes an intrinsic diode DIODE between its drain and its source which is oriented to block the flow of a current between the functional port and the pre-regulation port.

Voltage regulation system

A variable-reluctance magnetic detection head delivers an electrical signal (Uin) and a rising wavefront of the electrical signal is compared with a first threshold (Th) in order to switch from a first state (B) to a second state (B), and a falling wavefront is compared with a second threshold (Tb) lower than the first threshold (Th) in order to switch from the second state (B) to the first state (B). In a diagnostics step, the first threshold (Th) or the second threshold (Tb) is modified, bringing these thresholds closer together, and a magnetic detection head is diagnosed as being defective if the duty cycle of the second state (B) is modified during the diagnostics step by a value higher than a diagnostics threshold predetermined in relation to a reference level.

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Tournefeuille, France

Aurore Desgeorge