Patents by Inventor Carsten Hermann
Carsten Hermann 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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Publication number: 20240143010Abstract: A voltage regulator circuit for providing a regulated voltage. The voltage regulator circuit includes: a regulator core which includes an operational amplifier having an output, a first input, and a second and third input configured to have the opposite polarity to the first input; and an output stage including a transistor, wherein the output is electrically conductively connected to the control terminal of the transistor, the first input is electrically conductively connected to a second terminal of the switching path of the transistor, and the third input can be electrically conductively connected to a reference voltage source. The second input can be electrically conductively connected to an input voltage source and the second input is electrically conductively connected to the output of a module which is configured to impress a control current into the second input, the level and/or polarization of which is dependent on a predetermined parameter.Type: ApplicationFiled: February 8, 2022Publication date: May 2, 2024Inventor: Carsten Hermann
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Patent number: 11829179Abstract: A method and an integrated circuit for limiting a switchable load current. The integrated circuit includes a main transistor, through which in the conductive state a load current flows for supplying a load and a mirror transistor, a gate terminal of the mirror transistor being electrically connected to a gate terminal of the main transistor and a source terminal of the mirror transistor being electrically connected to a source terminal of the main transistor. The integrated circuit further includes a coupling circuit, which is configured to track a source drain voltage of the mirror transistor as a function of the source drain voltage of the main transistor. A gate control circuit is further provided, which limits the load current through the main transistor on the basis of a drain current through the mirror transistor.Type: GrantFiled: June 13, 2022Date of Patent: November 28, 2023Assignee: ROBERT BOSCH GMBHInventor: Carsten Hermann
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Patent number: 11808809Abstract: An electrical circuit for testing primary internal signals of an ASIC. Only test pin is provided via which a selection can be made of a digital or analog signal to be observed. The electrical circuit includes a Schmitt trigger between the test pin and an output terminal of the electrical circuit. A test mode id activated when a switching threshold of the Schmitt trigger is exceeded. At least one sub-circuit is provided for the observation of a digital signal, having a resistor, an NMOS transistor, and an AND gate, at whose first input the digital signal is present. The resistor is between the test pin and the drain terminal of the NMOS transistor. The source terminal is connected to ground, and the gate terminal is connected to the output of the AND gate. The second input of the AND gate being connected to the output terminal of the electrical circuit.Type: GrantFiled: November 23, 2018Date of Patent: November 7, 2023Assignee: ROBERT BOSCH GMBHInventor: Carsten Hermann
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Publication number: 20220397928Abstract: A method and an integrated circuit for limiting a switchable load current. The integrated circuit includes a main transistor, through which in the conductive state a load current flows for supplying a load and a mirror transistor, a gate terminal of the mirror transistor being electrically connected to a gate terminal of the main transistor and a source terminal of the mirror transistor being electrically connected to a source terminal of the main transistor. The integrated circuit further includes a coupling circuit, which is configured to track a source drain voltage of the mirror transistor as a function of the source drain voltage of the main transistor. A gate control circuit is further provided, which limits the load current through the main transistor on the basis of a drain current through the mirror transistor.Type: ApplicationFiled: June 13, 2022Publication date: December 15, 2022Inventor: Carsten Hermann
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Patent number: 11262775Abstract: An electrical circuit for ensuring safe ramp-up and ramp-down of at least a regulated operating voltage, a reference voltage, and a reset signal for a consumer is described. The electrical circuit includes a voltage reference circuit and a voltage regulator. The voltage regulator is provided in order to furnish a regulated operating voltage, the voltage reference circuit is provided in order to be supplied with the regulated operating voltage furnished by the voltage regulator, and the voltage regulator is provided in order to obtain a reference voltage from the voltage reference circuit.Type: GrantFiled: January 15, 2019Date of Patent: March 1, 2022Assignee: Robert Bosch GmbHInventor: Carsten Hermann
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Patent number: 11061426Abstract: A voltage reference circuit serves to furnish a reference voltage for an application-specific integrated circuit. The voltage reference circuit includes a voltage input for applying an operating voltage; a ground terminal; a voltage output for furnishing a reference voltage; and a signal output for furnishing a power-on reset signal. The voltage reference circuit includes an IPTAT circuit, connected between the voltage input and ground terminal, for generating a current proportional to the absolute temperature, the voltage reference circuit being embodied to furnish the power-on reset signal only if the reference voltage has reached a target value and if additionally a current is flowing in the IPTAT circuit with a quantity of current that reaches or exceeds a minimum current intensity determined by a voltage value of the operating voltage and by a pull-down resistance value.Type: GrantFiled: January 16, 2019Date of Patent: July 13, 2021Assignee: Robert Bosch GmbHInventor: Carsten Hermann
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Publication number: 20210063483Abstract: An electrical circuit for testing primary internal signals of an ASIC. Only test pin is provided via which a selection can be made of a digital or analog signal to be observed. The electrical circuit includes a Schmitt trigger between the test pin and an output terminal of the electrical circuit. A test mode id activated when a switching threshold of the Schmitt trigger is exceeded. At least one sub-circuit is provided for the observation of a digital signal, having a resistor, an NMOS transistor, and an AND gate, at whose first input the digital signal is present. The resistor is between the test pin and the drain terminal of the NMOS transistor. The source terminal is connected to ground, and the gate terminal is connected to the output of the AND gate. The second input of the AND gate being connected to the output terminal of the electrical circuit.Type: ApplicationFiled: November 23, 2018Publication date: March 4, 2021Inventor: Carsten Hermann
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Publication number: 20200387183Abstract: An electrical circuit for ensuring safe ramp-up and ramp-down of at least a regulated operating voltage, a reference voltage, and a reset signal for a consumer is described. The electrical circuit includes a voltage reference circuit and a voltage regulator. The voltage regulator is provided in order to furnish a regulated operating voltage, the voltage reference circuit is provided in order to be supplied with the regulated operating voltage furnished by the voltage regulator, and the voltage regulator is provided in order to obtain a reference voltage from the voltage reference circuit.Type: ApplicationFiled: January 15, 2019Publication date: December 10, 2020Inventor: Carsten HERMANN
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Publication number: 20200379498Abstract: A voltage reference circuit serves to furnish a reference voltage for an application-specific integrated circuit. The voltage reference circuit includes a voltage input for applying an operating voltage; a ground terminal; a voltage output for furnishing a reference voltage; and a signal output for furnishing a power-on reset signal. The voltage reference circuit includes an IPTAT circuit, connected between the voltage input and ground terminal, for generating a current proportional to the absolute temperature, the voltage reference circuit being embodied to furnish the power-on reset signal only if the reference voltage has reached a target value and if additionally a current is flowing in the IPTAT circuit with a quantity of current that reaches or exceeds a minimum current intensity determined by a voltage value of the operating voltage and by a pull-down resistance value.Type: ApplicationFiled: January 16, 2019Publication date: December 3, 2020Inventor: Carsten HERMANN
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Patent number: 10052960Abstract: A circuit for pulse duty factor limitation in a switch mode regulator, having an output stage to which control is applied by a signal, is described, in which circuit a pulse duty factor limiter is connected to the switch mode regulator in order to transfer the signal to the pulse duty factor limiter; the pulse duty factor limiter is configured to generate from the signal a limited signal limited at the top end in terms of pulse duty factor; and the pulse duty factor limiter is connected to the output stage in order to transfer the limited signal to the output stage. Also proposed is a method for operating a switch mode regulator having a downstream circuit to which control is applied by a signal of the switch mode regulator and having a capacitor that becomes charged when the downstream circuit is switched off, in which method the pulse duty factor of the signal is limited at an upper limit value in such a way that a predetermined charging time for the capacitor is available.Type: GrantFiled: July 9, 2014Date of Patent: August 21, 2018Assignee: Robert Bosch GmbHInventor: Carsten Hermann
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Patent number: 9928979Abstract: A circuit arrangement for activating a control device includes: a first switch in a main current path, via which the control device is activated; an alternative current path; and a control logic which compares a voltage present for activating the control device to a threshold voltage and opens the first switch if the threshold voltage falls below so that a higher volume of an interference current effectuated by the present negative voltage flows via the alternative current path.Type: GrantFiled: August 14, 2015Date of Patent: March 27, 2018Assignee: ROBERT BOSCH GMBHInventors: Martin Kaiser, Carsten Hermann, Ralph Bauer, Johannes Kunst
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Patent number: 9797371Abstract: An assembly of rotor blades and hub for a turbine, such as a tidal current turbine. Each rotor blade includes a cavity and at least two ribs extending into the cavity at a radially inward (lower) region of the rotor blade. The hub includes a journal for each blade and the journal extends into the cavity and is supported by the at least two ribs.Type: GrantFiled: January 17, 2013Date of Patent: October 24, 2017Assignee: Andritz Hydro GmbHInventors: Johannes Geromiller, Daniel Plessing, Carsten Hermann
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Patent number: 9705480Abstract: A circuit for generating an output signal having a second pulse duty factor from an input signal having a first pulse duty factor includes a first capacitor and a second capacitor which are each connected to a charge source for periodically charging the capacitors. A voltage across the charged first capacitor is defined as a reference voltage, and the pulse duty factor of the output signal is defined by the charging period of the second capacitor required for reaching the reference voltage.Type: GrantFiled: July 9, 2014Date of Patent: July 11, 2017Assignee: ROBERT BOSCH GMBHInventor: Carsten Hermann
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Publication number: 20160207405Abstract: A circuit for pulse duty factor limitation in a switch mode regulator, having an output stage to which control is applied by a signal, is described, in which circuit a pulse duty factor limiter is connected to the switch mode regulator in order to transfer the signal to the pulse duty factor limiter; the pulse duty factor limiter is configured to generate from the signal a limited signal limited at the top end in terms of pulse duty factor; and the pulse duty factor limiter is connected to the output stage in order to transfer the limited signal to the output stage. Also proposed is a method for operating a switch mode regulator having a downstream circuit to which control is applied by a signal of the switch mode regulator and having a capacitor that becomes charged when the downstream circuit is switched off, in which method the pulse duty factor of the signal is limited at an upper limit value in such a way that a predetermined charging time for the capacitor is available.Type: ApplicationFiled: July 9, 2014Publication date: July 21, 2016Applicant: Robert Bosch GmbHInventor: Carsten Hermann
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Publication number: 20160204769Abstract: A circuit for generating an output signal having a second pulse duty factor from an input signal having a first pulse duty factor includes a first capacitor and a second capacitor which are each connected to a charge source for periodically charging the capacitors. A voltage across the charged first capacitor is defined as a reference voltage, and the pulse duty factor of the output signal is defined by the charging period of the second capacitor required for reaching the reference voltage.Type: ApplicationFiled: July 9, 2014Publication date: July 14, 2016Inventor: Carsten HERMANN
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Publication number: 20160056002Abstract: A circuit arrangement for activating a control device includes: a first switch in a main current path, via which the control device is activated; an alternative current path; and a control logic which compares a voltage present for activating the control device to a threshold voltage and opens the first switch if the threshold voltage falls below so that a higher volume of an interference current effectuated by the present negative voltage flows via the alternative current path.Type: ApplicationFiled: August 14, 2015Publication date: February 25, 2016Inventors: Martin Kaiser, Carsten Hermann, Ralph Bauer, Johannes Kunst
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Publication number: 20150071784Abstract: An assembly of rotor blades and hub for a turbine, such as a tidal current turbine. Each rotor blade includes a cavity and at least two ribs extending into the cavity at a radially inward (lower) region of the rotor blade. The hub includes a journal for each blade and the journal extends into the cavity and is supported by the at least two ribs.Type: ApplicationFiled: January 17, 2013Publication date: March 12, 2015Inventors: Johannes Geromiller, Daniel Plessing, Carsten Hermann