Patents by Inventor Fabian HOHMANN

Fabian HOHMANN 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).

  • Publication number: 20240088889
    Abstract: A method for driving a topological semiconductor switch for a power electronics system, wherein the topological semiconductor switch is split into at least two groups of power semiconductors, wherein, when an active short circuit is identified, switchover from the power semiconductor which conducts the short circuit first to the other power semiconductor takes place.
    Type: Application
    Filed: August 29, 2023
    Publication date: March 14, 2024
    Applicant: ZF Friedrichshafen AG
    Inventor: Fabian Hohmann
  • Publication number: 20240048071
    Abstract: A method for operating at least one switching device of a power converter includes actuating a first switching element of the switching device by a first pulse-width modulation signal when the current flux in the switching device lies below a predefined threshold value, or actuating a second switching element of the switching device by a second pulse-width modulation signal when a current flux in the switching device exceeds the predefined threshold value. At least one parameter of the first pulse-width modulation signal and/or of the second pulse-width modulation signal is adjusted according to the time point of achievement of the predefined threshold value.
    Type: Application
    Filed: August 4, 2023
    Publication date: February 8, 2024
    Applicant: ZF Friedrichshafen AG
    Inventor: Fabian Hohmann
  • Publication number: 20240048141
    Abstract: A method for activating a circuit arrangement for power semiconductors of an inverter with at least one phase, having at least two power semiconductors, which are connected in parallel with one another, wherein the power semiconductors are divided into two groups, of which at least one first group has a separate driver, and wherein the activation of the power semiconductors takes place in such a manner that during the switch-on operation, initially the first group and subsequently the second group is switched on.
    Type: Application
    Filed: August 4, 2023
    Publication date: February 8, 2024
    Applicant: ZF Friedrichshafen AG
    Inventor: Fabian Hohmann
  • Publication number: 20240047320
    Abstract: A power electronics module, having a DBC PCB having power semiconductors arranged thereon, and a multilayered leadframe including at least two separate subframes. No power or control routing takes place on the PCB. A region of the load source subregion is arranged between the PCB and the gate source and kelvin source subregion and is in electrical contact with the power semiconductors, and an adjoining region is located outside the PCB. A region of the drain source subregion is in electrical contact with a drain terminal on the PCB, and an adjoining region is located outside the PCB. The gate source subregion and the kelvin source subregion have a region above the load source subregion at which said subregions are in electrical contact with the power semiconductors and have an adjoining region outside the PCB which is opposite the drain source subregion and has pins bent above the PCB.
    Type: Application
    Filed: August 1, 2023
    Publication date: February 8, 2024
    Applicant: ZF Friedrichshafen AG
    Inventors: Ake Ewald, Stefan Hain, Fabian Hohmann
  • Publication number: 20240048140
    Abstract: A method for driving a topological semiconductor switch for a power electronics system, wherein the topological semiconductor switch is split into at least two groups of power semiconductors that are driven temporally separately from one another at a preset switching frequency in such a way that in each case only one of the power semiconductors takes on the total current, wherein the method includes determining of a next switching point, including conducting a pointwise interpolation of the discretized phase current in such a way that the change in the current between two conducting phases is measured and extrapolated, and then, together with the switching frequency, the current rise and the current error are predicted for the next two switching operations, and from this the next switching point with the smallest absolute current deviation is determined.
    Type: Application
    Filed: August 4, 2023
    Publication date: February 8, 2024
    Applicant: ZF Friedrichshafen AG
    Inventor: Fabian Hohmann
  • Publication number: 20240022036
    Abstract: A method for manufacturing a terminal apparatus for connecting at least one electrical or electronica component for an electrical or electronic module includes bending a pre-machined sheet metal element, having a first electric terminal device for connecting to a first electrical potential, a control terminal having at least one control contact, and a second electric terminal device arranged between the first electric terminal device and the control terminal for connecting to a second electrical potential, wherein the second electric terminal device has a path section including a first path for contact-connection with a terminal for the second electrical potential of the electrical or electronic component, and at least one second path arranged in parallel with the first path, and wherein a first bending section of the first path is bent into a lower plane than a second bending section of the second path in order to form the terminal apparatus.
    Type: Application
    Filed: July 14, 2023
    Publication date: January 18, 2024
    Applicant: ZF Friedrichshafen AG
    Inventors: Ake Ewald, Fabian Hohmann, Stefan Hain
  • Publication number: 20240022180
    Abstract: A power module for a current converter for an electric drive of a motor vehicle comprises a termination substrate having electrical contact portions that are electrically isolated from one another, a plurality of power semiconductor elements arranged on the termination substrate, each having a first terminal, a second terminal, and a control terminal, the first terminals of all the power semiconductor elements being electrically connected to a first contact portion of the termination substrate.
    Type: Application
    Filed: July 18, 2023
    Publication date: January 18, 2024
    Applicant: ZF Friedrichshafen AG
    Inventors: Ake Ewald, Stefan Hain, Fabian Hohmann, Chandra Gupta Hazarika
  • Publication number: 20240021436
    Abstract: A method for manufacturing a terminal apparatus for connecting a component for an electrical module includes bending a pre-machined sheet metal element, having a first electric terminal device for connecting to a first potential, a control terminal having a control contact, and a second electric terminal device arranged between the first electric terminal device and the control terminal and separated from the first electric terminal device by a gap, and for connecting to a second electrical potential, further having a path section including a first path for contact-connection with a terminal for the second electrical potential of the component, and a second path arranged in parallel with the first, and wherein an edge region of the sheet metal is bent such that the first electric terminal device and the path section are brought together such that the first electric terminal device and the path section overlap.
    Type: Application
    Filed: July 17, 2023
    Publication date: January 18, 2024
    Applicant: ZF Friedrichshafen AG
    Inventors: Ake Ewald, Fabian Hohmann, Stefan Hain
  • Patent number: 11711027
    Abstract: A power module for operating a vehicle, in particular an electric vehicle and/or a hybrid vehicle, comprising numerous semiconductor components, which form at least one topological switch; an input contact for supplying an input current to the semiconductor components; a control electronics for controlling the semiconductor components, to generate an output current based on the input current; an output contact for outputting the output current; wherein the control electronics is configured to set a gate current for one of the semiconductor components based on one or more status parameters for the semiconductor component.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: July 25, 2023
    Assignee: ZF Friedrichshafen AG
    Inventors: Fabian Hohmann, Stefan Hain
  • Publication number: 20230198375
    Abstract: A method for actuating a circuit arrangement for power semiconductors of an inverter with at least one phase, having at least two semiconductor switches, each of which has at least two power semiconductors consisting of different semiconductor materials and connected in parallel with one another, wherein the method includes switching over between the at least two power semiconductors of different semiconductor materials within a clock period in each of the phases in each case at a first or last switching time of a switchover between the at least two semiconductor switches.
    Type: Application
    Filed: December 15, 2022
    Publication date: June 22, 2023
    Applicant: ZF Friedrichshafen AG
    Inventors: Fabian HOHMANN, Michael MEILER
  • Publication number: 20210408941
    Abstract: A power module for operating a vehicle, in particular an electric vehicle and/or a hybrid vehicle, comprising numerous semiconductor components, which form at least one topological switch; an input contact for supplying an input current to the semiconductor components; a control electronics for controlling the semiconductor components, to generate an output current based on the input current; an output contact for outputting the output current; wherein the control electronics is configured to set a gate current for one of the semiconductor components based on one or more status parameters for the semiconductor component.
    Type: Application
    Filed: June 28, 2021
    Publication date: December 30, 2021
    Applicant: ZF Friedrichshafen AG
    Inventors: Fabian HOHMANN, Stefan HAIN