Abstract: A device for operating a braking system of a motor vehicle, including a first control unit for operating an ABS unit of the braking system and including a second control unit for operating a brake booster unit of the braking system. The control units are designed as application-specific integrated circuits and are connected to a microprocessor for their control, the microprocessor including a separate shut-off path for each of the circuits.

Abstract: A device for operating a braking system of a motor vehicle, including a first control unit for operating an ABS unit of the braking system and including a second control unit for operating a brake booster unit of the braking system. The control units are designed as application-specific integrated circuits and are connected to a microprocessor for their control, the microprocessor including a separate shut-off path for each of the circuits.

Abstract: A method for operating an electric motor connectable via a switching device to a current source and connected in parallel with a freewheeling device, the switching device having control applied to it at a specific activation ratio within each working cycle to establish a desired effective operating voltage of the electric motor, so that in at least one operating mode each working cycle is includes an activation and a freewheeling time period. The freewheeling device has a freewheeling transistor and a freewheeling diode, connected in parallel with the transistor and reverse-biased as to the current source; and control is applied to the freewheeling transistor in the freewheeling time period as follows: identifying the freewheeling voltage dropping across the electric motor; and switching the freewheeling transistor for a specific switching time period if the freewheeling voltage is different from zero, particularly less than zero. Also described is an electric motor device.

Abstract: A method for operating an electric motor connectable via a switching device to a current source and connected in parallel with a freewheeling device, the switching device having control applied to it at a specific activation ratio within each working cycle to establish a desired effective operating voltage of the electric motor, so that in at least one operating mode each working cycle is includes an activation and a freewheeling time period. The freewheeling device has a freewheeling transistor and a freewheeling diode, connected in parallel with the transistor and reverse-biased as to the current source; and control is applied to the freewheeling transistor in the freewheeling time period as follows: identifying the freewheeling voltage dropping across the electric motor; and switching the freewheeling transistor for a specific switching time period if the freewheeling voltage is different from zero, particularly less than zero. Also described is an electric motor device.

Abstract: A device and a method are provided for determining the after-run voltage of a direct current motor which is operated via cycled control. In normal operation the direct current motor is controlled via PWM control and a first specifiable pulse/no-pulse ratio. An evaluation unit is provided for determining an after-run voltage variable which is representative of the after-run voltage of the motor. Furthermore, for determining the after-run voltage variable the direct current motor is controlled via a specifiable, variable second pulse/no-pulse ratio.

Abstract: A microcontroller system includes a microcontroller, a device which is controllable by the microcontroller, and a monitoring device. Under the control of a normal operation program, the microcontroller outputs a normal operation indicating signal. If the normal operation indicating signal is absent, the monitoring device transfers the device into a secured state and, if it is absent over a predefined period of time, locks the device in that state. When predefined exceptional conditions occur, the microcontroller changes to an operation preparation program, and the monitoring device increments a register. If the contents of the register reach a predefined value, the monitoring device locks the device in the secured state.

Abstract: A circuit arrangement, having a circuit and a computer unit is provided, in which the circuit and the computer unit are connected to one another via multiple lines for transmitting a number of signals which are embodied as information signals. The circuit has a multiplexer for combining signals, the multiplexer being connected to the computer unit via an additional line.

Abstract: A device and a method are provided for determining the after-run voltage of a direct current motor which is operated via cycled control. In normal operation the direct current motor is controlled via PWM control and a first specifiable pulse/no-pulse ratio. An evaluation unit is provided for determining an after-run voltage variable which is representative of the after-run voltage of the motor. Furthermore, for determining the after-run voltage variable the direct current motor is controlled via a specifiable, variable second pulse/no-pulse ratio.

Abstract: A microcontroller system includes a microcontroller, a device which is controllable by the microcontroller, and a monitoring device. Under the control of a normal operation program, the microcontroller outputs a normal operation indicating signal. If the normal operation indicating signal is absent, the monitoring device transfers the device into a secured state and, if it is absent over a predefined period of time, locks the device in that state. When predefined exceptional conditions occur, the microcontroller changes to an operation preparation program, and the monitoring device increments a register. If the contents of the register reach a predefined value, the monitoring device locks the device in the secured state.

Abstract: A circuit configuration for converting analog signals to digital signals, having a multiplexer which has a plurality of analog signal inputs, an address input that is several bits wide and an output, and which is configured to connect one of the analog signal inputs to the output when an address assigned to the respective analog signal input is applied to the address input, and having an analog/digital converter, whose input is connected to the output of the multiplexer in order to digitize the respective analog signal emitted at the output. The circuit configuration includes at least one test signal source for supplying a test signal to a subset of the analog signal inputs of the multiplexer. In addition, an address is assigned to each of the analog signal inputs of this subset, of whose bits one has a first binary value, and all the others have a second binary value that is different from the first.

Abstract: Methods and a system of controlling and/or regulating operating sequences in a brake system of a vehicle having an electronic circuit and/or control which controls and/or regulates the operating sequences and having consumers in the control and the brake system and at least one temperature detection means arranged in thermal contact with at least part of the electronic circuit and/or part of the brake system. A temperature value representing the temperature of this part is detected, and the system determines whether the temperature value exceeds at least one threshold value, where at least one measure is initiated, to reduce the temperature or to retard or stop the increase in temperature.

Abstract: A circuit system for generating a stabilized power supply voltage, which, on the basis of a temperature quantity, selects an operating mode of a voltage regulator. In this context, it is provided, in particular, to apply the principles of the present invention to the supplying of voltage to electronic consumers in motor vehicles. During operation of the voltage regulator, a temperature quantity is recorded which is indicative of a quantity representing or influencing the operation of the voltage regulator. During active operation, the voltage regulator can be operated in at least two operating modes, and the current operating mode is selected as a function of the recorded temperature quantity.

Abstract: A circuit configuration for converting analog signals to digital signals, having a multiplexer which has a plurality of analog signal inputs, an address input that is several bits wide and an output, and which is configured to connect one of the analog signal inputs to the output when an address assigned to the respective analog signal input is applied to the address input, and having an analog/digital converter, whose input is connected to the output of the multiplexer in order to digitize the respective analog signal emitted at the output. The circuit configuration includes at least one test signal source for supplying a test signal to a subset of the analog signal inputs of the multiplexer. In addition, an address is assigned to each of the analog signal inputs of this subset, of whose bits one has a first binary value, and all the others have a second binary value that is different from the first.

Abstract: A circuit system for generating a stabilized power supply voltage, which, on the basis of a temperature quantity, selects an operating mode of a voltage regulator. In this context, it is provided, in particular, to apply the principles of the present invention to the supplying of voltage to electronic consumers in motor vehicles. During operation of the voltage regulator, a temperature quantity is recorded which is indicative of a quantity representing or influencing the operation of the voltage regulator. During active operation, the voltage regulator can be operated in at least two operating modes, and the current operating mode is selected as a function of the recorded temperature quantity.

Abstract: Methods and a system of controlling and/or regulating operating sequences in a brake system (FIG. 3) of a vehicle having an electronic circuit and/or control (301) which controls and/or regulates the operating sequences and having consumers in the control (301) and the brake system (300) and at least one temperature detection means arranged in thermal contact with at least part of the electronic circuit and/or part of the brake system. A temperature value representing the temperature of this part is detected, and the system determines whether the temperature value exceeds at least one threshold value, where at least one measure is initiated, to reduce the temperature or to retard or stop the increase in temperature.