Patents by Inventor Alfons Fisch
Alfons Fisch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11777326Abstract: A device controls a safety-relevant electronic system and has a power supply. The power supply is supplied with a battery voltage at a first input terminal and supplies a first supply voltage at a first output terminal which is lower than the battery voltage. A microcontroller for generating a first control signal, provided at a first control output of the microcontroller for processing by way of a control unit, is supplied with the first supply voltage at a second input terminal. A monitoring unit for generating a second control signal, provided at a second control output of the monitoring unit for processing by the control unit, is supplied with the first supply voltage at a third supply potential input terminal. The third supply potential input terminal, the second control output and the second data port of the monitoring unit are configured to be voltage-proof with respect to the battery voltage.Type: GrantFiled: October 7, 2020Date of Patent: October 3, 2023Assignee: Vitesco Technologies GmbHInventors: Andreas Wunderlich, Alfons Fisch
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Publication number: 20230305913Abstract: A semiconductor chip with functions implemented thereon in circuitry has a first region, in which a first group of safety-relevant base functions are implemented in circuitry, and a second region, which is separated from the first region using technological safety measures and in which a first group of monitoring functions that monitor the base functions are implemented in circuitry. It also contains a third region, which is formed on the semiconductor chip and is separated from the other regions using technological safety measures and in which a second group of monitoring functions that monitor the base functions are implemented in circuitry.Type: ApplicationFiled: June 21, 2021Publication date: September 28, 2023Inventors: Andreas Wunderlich, Alfons Fisch, Thierry Bavois, Franz Laberer
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Publication number: 20220416556Abstract: A device controls a safety-relevant electronic system and has a power supply. The power supply is supplied with a battery voltage at a first input terminal and supplies a first supply voltage at a first output terminal which is lower than the battery voltage. A microcontroller for generating a first control signal, provided at a first control output of the microcontroller for processing by way of a control unit, is supplied with the first supply voltage at a second input terminal. A monitoring unit for generating a second control signal, provided at a second control output of the monitoring unit for processing by the control unit, is supplied with the first supply voltage at a third supply potential input terminal. The third supply potential input terminal, the second control output and the second data port of the monitoring unit are configured to be voltage-proof with respect to the battery voltage.Type: ApplicationFiled: October 7, 2020Publication date: December 29, 2022Inventors: Andreas Wunderlich, Alfons Fisch
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Publication number: 20220329077Abstract: 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.Type: ApplicationFiled: June 24, 2022Publication date: October 13, 2022Applicant: Vitesco Technologies GmbHInventors: Andreas Wunderlich, Alfons Fisch, Aurore Desgeorge
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Patent number: 11390228Abstract: A circuit arrangement for providing a plurality of supply voltages at output terminals respectively assigned to said supply voltages from an input voltage applied to an input terminal. A digital interface receives of a serial digital control signal that contains the information as to which of the supply voltages is/are to be applied to the output terminals respectively assigned to them. A hard-wired delay circuit is configured, under control by the serial digital control signal, to relay the supply voltages to be applied to the respectively assigned output terminals to the output terminals one after another with a respectively predetermined delay.Type: GrantFiled: May 29, 2019Date of Patent: July 19, 2022Assignee: Vitesco Technologies GmbHInventors: Alfons Fisch, Andreas Wunderlich, Mikhail Zarkhin, Aurore Desgeorge
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Patent number: 11341077Abstract: A method assigns addresses from a master unit to a number of slave units. The slave units are connected to the master unit for the transmission of information. An address output of the master unit is connected to an address input of a first slave unit and the address output of an n-th slave unit is connected to the address input of an n+1-th slave unit. The slave units, when a first level is applied to their address input, set the level at their address output to the first level and change to the first, “non-addressed” state, in the event of a transition of the level at their address input from the first level to a second level, change to the “addressable” state, upon receiving an address from the master unit, check the received address for validity in the “addressable” state and, acknowledge the reception to the master unit.Type: GrantFiled: August 1, 2017Date of Patent: May 24, 2022Assignee: Vitesco Technologies GmbHInventors: Bernhard Bieg, Klaus-Dieter Schneider, Alfons Fisch, Andreas Wunderlich
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Publication number: 20210286751Abstract: A method assigns addresses from a master unit to a number of slave units. The slave units are connected to the master unit for the transmission of information. An address output of the master unit is connected to an address input of a first slave unit and the address output of an n-th slave unit is connected to the address input of an n+1-th slave unit. The slave units, when a first level is applied to their address input, set the level at their address output to the first level and change to the first, “non-addressed” state, in the event of a transition of the level at their address input from the first level to a second level, change to the “addressable” state, upon receiving an address from the master unit, check the received address for validity in the “addressable” state and, acknowledge the reception to the master unit.Type: ApplicationFiled: August 1, 2017Publication date: September 16, 2021Inventors: BERNHARD BIEG, KLAUS-DIETER SCHNEIDER, ALFONS FISCH, ANDREAS WUNDERLICH
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Patent number: 11067626Abstract: A circuit arrangement includes a microcontroller having a first analog-to-digital converter whose input is connected to the output of a first multiplexer whose output is connected to a first comparison device for comparing reference voltages, and a first serial interface circuit connected to the first comparison device. A voltage generating circuit includes a second analog-to-digital converter whose input is connected to the output of a second multiplexer whose output is connected to a number of registers, which are connected to a safety value generator and store digital values together with a respective safety value, and a second serial interface circuit connected to the registers. The first and second serial interface circuits are connected to each other for communication of the microcontroller with the voltage generating circuit, the first interface circuit being connected to a second comparison device for comparing supply voltages and/or currents with desired voltages and/or desired currents.Type: GrantFiled: April 13, 2020Date of Patent: July 20, 2021Assignee: Vitesco Technologies GmbHInventors: Andreas Wunderlich, Alfons Fisch, Bernhard Bieg
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Publication number: 20210129776Abstract: A circuit arrangement for providing a plurality of supply voltages at output terminals respectively assigned to said supply voltages from an input voltage applied to an input terminal. A digital interface receives of a serial digital control signal that contains the information as to which of the supply voltages is/are to be applied to the output terminals respectively assigned to them. A hard-wired delay circuit is configured, under control by the serial digital control signal, to relay the supply voltages to be applied to the respectively assigned output terminals to the output terminals one after another with a respectively predetermined delay.Type: ApplicationFiled: May 29, 2019Publication date: May 6, 2021Inventors: ALFONS FISCH, ANDREAS WUNDERLICH, MIKHAIL ZARKHIN, AURORE DESGEORGE
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Publication number: 20210011081Abstract: A circuit arrangement includes a microcontroller having a first analog-to-digital converter whose input is connected to the output of a first multiplexer whose output is connected to a first comparison device for comparing reference voltages, and a first serial interface circuit connected to the first comparison device. A voltage generating circuit includes a second analog-to-digital converter whose input is connected to the output of a second multiplexer whose output is connected to a number of registers, which are connected to a safety value generator and store digital values together with a respective safety value, and a second serial interface circuit connected to the registers. The first and second serial interface circuits are connected to each other for communication of the microcontroller with the voltage generating circuit, the first interface circuit being connected to a second comparison device for comparing supply voltages and/or currents with desired voltages and/or desired currents.Type: ApplicationFiled: April 13, 2020Publication date: January 14, 2021Applicant: Vitesco Technologies GMBHInventors: Andreas Wunderlich, Alfons Fisch, Bernhard Bieg
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Patent number: 10587193Abstract: A method and apparatus for a power converter assembly detects an over-current, latches off a low-side switch if an over-current is detected, holds the low-side switch latched off until a PWM controller provides a predetermined minimum pulse to the latch (for the duration of the over-current), and unlatches the low-side switch if a PWM controller provides a predetermined minimum pulse to the latch. A power converter assembly includes a PWM controller coupled to the main switch, the PWM controller configured to control the main switch according to a duty cycle. A latch is coupled with a secondary switch and configured to selectively turn off the secondary switch. The PWM controller is configured to provide a PWM control signal to the latch, and the control signal is configured to reset the latch to allow the secondary switch to turn on only when the PWM begins operating with a minimum pulse width.Type: GrantFiled: April 20, 2015Date of Patent: March 10, 2020Assignee: Vitesco Technologies USA, LLC.Inventors: Mikhail Zarkhin, Alfons Fisch
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Patent number: 10298040Abstract: The maximum time that external components of a switch mode power supply over-conduct is determined by an actual ambient temperature at which the devices are operating before they are turned on. Their operation time is thus extended when temperatures are low and decreased when temperatures are high.Type: GrantFiled: September 23, 2016Date of Patent: May 21, 2019Assignee: Continental Automotive Systems, Inc.Inventors: Mikhail Zarkhin, Alfons Fisch
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Publication number: 20180090963Abstract: The maximum time that external components of a switch mode power supply over-conduct is determined by an actual ambient temperature at which the devices are operating before they are turned on. Their operation time is thus extended when temperatures are low and decreased when temperatures are high.Type: ApplicationFiled: September 23, 2016Publication date: March 29, 2018Inventors: Mikhail Zarkhin, Alfons Fisch
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Patent number: 9825527Abstract: A method and apparatus for generating a pulse width modulation (PWM) control signal generates a sawtooth ramp signal at a first frequency under standard operating conditions using a ramp generator, and generates a sawtooth ramp at a second frequency under alternative operating conditions. The sawtooth ramp is combined with an error threshold by a PWM controller to generate a square wave PWM control signal. The error threshold is adjusted simultaneous with adjusting the frequency of the sawtooth ramp, thereby preventing either a voltage overshoot and a voltage undershoot.Type: GrantFiled: August 12, 2014Date of Patent: November 21, 2017Assignee: Continental Automotive Systems, Inc.Inventors: Mikhail Zarkhin, Alfons Fisch
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Publication number: 20160308439Abstract: A method and apparatus for a power converter assembly detects an over-current, latches off a low-side switch if an over-current is detected, holds the low-side switch latched off until a PWM controller provides a predetermined minimum pulse to the latch (for the duration of the over-current), and unlatches the low-side switch if a PWM controller provides a predetermined minimum pulse to the latch. A power converter assembly includes a PWM controller coupled to the main switch, the PWM controller configured to control the main switch according to a duty cycle. A latch is coupled with a secondary switch and configured to selectively turn off the secondary switch. The PWM controller is configured to provide a PWM control signal to the latch, and the control signal is configured to reset the latch to allow the secondary switch to turn on only when the PWM begins operating with a minimum pulse width.Type: ApplicationFiled: April 20, 2015Publication date: October 20, 2016Inventors: Mikhail Zarkhin, Alfons Fisch
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Publication number: 20160049869Abstract: A method and apparatus for generating a pulse width modulation (PWM) control signal generates a sawtooth ramp signal at a first frequency under standard operating conditions using a ramp generator, and generates a sawtooth ramp at a second frequency under alternative operating conditions. The sawtooth ramp is combined with an error threshold by a PWM controller to generate a square wave PWM control signal. The error threshold is adjusted simultaneous with adjusting the frequency of the sawtooth ramp, thereby preventing either a voltage overshoot and a voltage undershoot.Type: ApplicationFiled: August 12, 2014Publication date: February 18, 2016Inventors: Mikhail Zarkhin, Alfons Fisch
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Patent number: 7596436Abstract: The operating voltage is monitored in a microcontroller having associated output stages which are used to control components. In the case of over-voltage, the output stage is disconnected. Two technology-related, voltage monitoring devices working in different operating voltage ranges are provided. Due to the combination thereof, a highly precise disconnection threshold and a greater area for the operating voltage, which is to be monitored, can be obtained. If a malfunction of an over-voltage occurs, the output stages can be disconnected in a reliable manner.Type: GrantFiled: April 8, 2005Date of Patent: September 29, 2009Assignee: Siemens AktiengesellschaftInventors: Johann Falter, Alfons Fisch, Ralf Förster, Marco Kick, Thomas Maier, Norman Marenco, Peter Skotzek
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Publication number: 20080004765Abstract: The operating voltage is monitored in a microcontroller having associated output stages which are used to control components. In the case of over-voltage, the output stage is disconnected. Two technology-related, voltage monitoring devices working in different operating voltage ranges are provided. Due to the combination thereof, a highly precise disconnection threshold and a greater area for the operating voltage, which is to be monitored, can be obtained. If a malfunction of an over-voltage occurs, the output stages can be disconnected in a reliable manner.Type: ApplicationFiled: April 8, 2005Publication date: January 3, 2008Applicant: SIEMENS AKTIENGESELLSCHAFTInventors: Johann Falter, Alfons Fisch, Ralf Forster, Marco Kick, Thomas Maier, Norman Marenco, Peter Skotzek
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Patent number: 6456086Abstract: A voltage monitoring device for monitoring two different supply voltages to be received by an electronic component. The monitoring device has a ratiometrically operating analog/digital converter, whose reference input is supplied with the larger supply voltage and whose measurement input is supplied with the smaller supply voltage. An output signal of the analog/digital converter is supplied to a window comparator in which the output signal is compared with predetermined limit values. A reset signal for the electronic component is produced if the output signal is greater than the upper limit value or less than the lower limit value.Type: GrantFiled: October 2, 2000Date of Patent: September 24, 2002Assignee: Siemens AktiengesellschaftInventors: Stephan Bolz, Alfons Fisch
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Patent number: 6456085Abstract: A symmetrical voltage divider whose tap is supplied with a reference voltage via a resistor is connected between the terminals of an inductive sensor. A diagnostic voltage is applied to the tap. Using evaluation devices, the diagnostic voltage is compared with two threshold values in a stationary state, and then sampled in the operational state, and a difference is calculated from the largest and smallest sampled, values and is compared with a third threshold value. Short circuits or line interruptions are detected from the comparison result and are displayed.Type: GrantFiled: May 22, 2000Date of Patent: September 24, 2002Assignee: Siemens AktiengesellschaftInventors: Franz Dietl, Alfons Fisch, Frank Vogel, Horst Punzmann